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   Latvijas Astronomijas biedrība

NASA CNEOS

• Latest Calculations Conclude Asteroid 2024 YR4 Now Poses No Significant Threat to Earth in 2032 and Beyond
  2025-02-24
  NASA has significantly lowered the risk of near-Earth asteroid 2024 YR4 as an impact threat to Earth for the foreseeable future.
• Asteroid 2024 YR4 reaches level 3 on the Torino Scale
  2025-01-31
  NASA analysis of a near-Earth asteroid, designated 2024 YR4, indicates it has a small chance of impacting Earth on Dec. 22, 2032.
• NASA Study: Asteroid’s Orbit, Shape Changed After DART Impact
  2024-03-19
  After NASA’s historic Double Asteroid Redirection Test, a JPL-led study has shown that the shape of asteroid Dimorphos has changed and its orbit has shrunk.
• NASA System Predicts Impact of a Very Small Asteroid Over Germany
  2024-01-24
  The Scout impact assessment system calculated where and when the asteroid 2024 BX1 would impact Earth’s atmosphere, providing a useful demonstration of planetary defense capability.
• CNEOS Predicts Another Small Asteroid Impact, This One over Northwestern France
  2023-02-14
  Another tiny asteroid on a collision course with Earth was detected over the weekend, and JPL’s CNEOS Scout system accurately predicted where and when the impact would happen, well before it actually occurred.
• NASA System Predicts Small Asteroid to Pass Close by Earth This Week
  2023-01-25
  On Thursday, Jan. 26, a small near-Earth asteroid will have a very close encounter with our planet. Designated 2023 BU, the asteroid will zoom over the southern tip of South America at about 4:27 p.m. PST (7:27 p.m. EST) only 2,200 miles (3,600 kilometers) above the planet’s surface and well ...
• NASA Program Predicted Impact of Small Asteroid Over Ontario, Canada
  2022-11-22
  In the early hours of Saturday, Nov. 19, the skies over southern Ontario, Canada, lit up as a tiny asteroid harmlessly streaked across the sky high in Earth’s atmosphere, broke up, and likely scattered small meteorites over the southern coastline of Lake Ontario. The fireball wasn’t a surprise. Roughly 1 ...
• US Space Force Releases Decades of Bolide Data to NASA for Planetary Defense Studies
  2022-04-07
  Hosted by JPL’s Center for Near Earth Object Studies, the data can be used by the science community to better understand how asteroids break up when entering the atmosphere.
• Updated Calculations Refine the Impact Probability for (29075) 1950 DA
  2022-03-29
  (29075) 1950 DA is a kilometer-sized asteroid that will make a close approach to Earth in 2880 and, because of the corresponding impact probability and size, has ranked at the top of the Sentry risk list since 2014.
• Update On Asteroid 1999 AN10
  1999-07-13
  

NASA Jet Propulsilon Laboratory:

• New Data Confirm 2020 SO to Be the Upper Centaur Rocket Booster From the 1960's
  2020-12-02
  The object, discovered in September by astronomers searching for near-Earth asteroids, garnered interest in the planetary science community due to its size and unusual orbit.
• MOXIE Could Help Future Rockets Launch Off Mars
  2020-11-24
  NASA's Perseverance rover carries a device to convert Martian air into oxygen that, if produced on a larger scale, could be used not just for breathing, but also for fuel.
• Independent Review Indicates NASA Prepared for Mars Sample Return Campaign
  2020-11-10
  A report, released Tuesday, concludes that the agency is well positioned for its ambitious plan to bring samples back from the Red Planet for further study on Earth.
• Impact Craters Reveal Details of Titan's Dynamic Surface Weathering
  2020-10-29
  New research on nine craters of Saturn's largest moon provides more details about how weathering affects the evolution of the surface - and what lies beneath.
• NASA InSight's 'Mole' Is Out of Sight
  2020-10-16
  Now that the heat probe is just below the Martian surface, InSight's arm will scoop some additional soil on top to help it keep digging so it can take Mars' temperature.
• This Transforming Rover Can Explore the Toughest Terrain
  2020-10-13
  Made of a pair of two-wheeled vehicles, NASA's DuAxel is designed to descend crater sides and near-vertical cliffs on the Moon, Mars, and beyond.
• NASA's Perseverance Rover Will Peer Beneath Mars' Surface
  2020-10-08
  The agency's newest rover will use the first ground-penetrating radar instrument on the Martian surface to help search for signs of past microbial life.
• AI Is Helping Scientists Discover Fresh Craters on Mars
  2020-10-01
  It's the first time machine learning has been used to find previously unknown craters on the Red Planet.
• School Bus-Size Asteroid to Safely Zoom Past Earth
  2020-09-22
  Roughly 15 to 30 feet wide, the object will make its closest approach on Sept. 24.
• Comet Discovered to Have Its Own Northern Lights
  2020-09-21
  An atmospheric light show previously relegated to planets and Jupiter moons is found on comet using data from ESA's Rosetta spacecraft.

Space.com

• When is the best time to see the Lyrid meteor shower 2025?
  2025-04-20
  Find out the best time to view the Lyrid meteor shower 2025 to make the most of the springtime shooting stars.
• NASA's Lucy probe flies by the asteroid Donaldjohanson on Easter Sunday
  2025-04-19
  On Easter Sunday (April 20), NASA's Lucy probe should have zipped past the asteroid Donaldjohanson, testing science instruments on the space rock.
• Could Mars volcanoes have supported ancient life on the Red Planet? Well, maybe
  2025-04-19
  Using NASA's Perseverance rover to analyze Martian rocks, researchers suggest that Mars' complex volcanism might hold clues about the planet's ancient habitability.
• Where to see the Lyrid meteor shower 2025: Top viewing tips
  2025-04-17
  Here's how and where to see the Lyrid meteor shower in 2025, which is active between April 16-25 and peaks on April 22.
• Bipartisan US Planetary Science Caucus 'alarmed' by Trump's possible plans to slash NASA budget and block Mars Sample Return
  2025-04-17
  In response to reports of the Trump administration aiming to slash NASA's 2026 science budget by nearly half, US Planetary Science Caucus co-chairs have expressed their alarm.
• NASA continues stacking its giant Artemis 2 SLS moon rocket (photos)
  2025-04-16
  NASA's next moon rocket is stacking higher and higher at the Kennedy Space Center, as the SLS stage adapter and interim cryogenic propulsion stage arrive in the VAB.
• Glitch forces Japan's asteroid-sampling Hayabusa2 probe into protective 'safe mode' in deep space
  2025-04-16
  An anomaly has forced the Japanese asteroid-sampling spacecraft Hayabusa2 into protective "safe mode" while journeying through deep space on its extended mission.

Astronomy Now

• NASA Downgrades the Risk of 2024 YR4 to Below 1%
  2025-02-23
  NASA astronomers are tracking asteroid 2024 YR4. Earth impact risk dropped to 0.28%, while lunar impact probability increased to 1%. Observations continue.

Univere Today

• April Flowers, Bring Meteor Showers: Catch the April Lyrid and Eta Aquariid Meteor Showers
  2025-04-16
  If skies are clear, be sure to watch for the April Lyrid meteors this Easter weekend. Spring in the northern hemisphere brings with it the promise for the Lyrids, the first good meteor shower of the season. Weather is just warming up in April, but we’re not yet in the midst ...
• Preserving Life’s Blueprint Beyond the Earth
  2025-04-15
  It’s no surprise that the future of humanity and even Earth’s biodiversity hangs in the balance and so the race to preserve life on our planet has never been more urgent. Species and ecosystems are vanishing at alarming rate so teams of scientists are turning to cutting-edge solutions to safeguard ...
• How Crater Shapes Are Revealing More About Titan’s Icy Crust
  2025-04-15
  Titan is Saturn's largest moon, with a thick atmosphere and liquid methane lakes, making it the only place besides Earth with stable liquid on its surface. A new paper reveals how a team of researchers have compared real craters on Titan with computer-simulated ones to determine the thickness of its ...
• Japan's Next Sample-Return Mission Could be to a Comet
  2025-04-11
  Japan's Next Sample-Return Mission Could be to a Comet
• New Comet SWAN Could Put On a Brief Show at Dawn
  2025-04-09
  Newly discovered comet C/2025 F2 SWAN could put on a brief dawn display over the next few weeks. Discovered thanks to the hard work of online sleuths and amateur astronomers, the comet may brighten towards perihelion on May 1st.

EarthSky

• Lucy spacecraft to fly by asteroid Donaldjohanson today. Expect surprises
  2025-04-20
  The Lucy spacecraft is heading to Jupiter's Trojan asteroids. But first it will rendezvous with the main-belt asteroid Donaldjohanson on April 20. The post Lucy spacecraft to fly by asteroid Donaldjohanson today. Expect surprises first appeared on EarthSky.
• Visible planets and night sky guide for April
  2025-04-20
  Visible planets and night sky guide. The Lyrid meteor shower is rising to its peak. It'll peak overnight on April 21-22, with a waning moon rising before dawn. The post Visible planets and night sky guide for April first appeared on EarthSky.
• 2025 Lyrid meteor shower: All you need to know
  2025-04-20
  The best time to watch the Lyrid meteor shower is late on the evening of April 21 before the thick waning crescent moon rises a few hours before dawn. The post 2025 Lyrid meteor shower: All you need to know first appeared on EarthSky.
• Meteor showers time! 10 easy tips for watching
  2025-04-20
  Meteor showers are unpredictable but nothing beats them for a fun and relaxing time under the stars. Here's our 10 tips to maximize your meteor viewing time. The post Meteor showers time! 10 easy tips for watching first appeared on EarthSky.

The Planetary Society

• Small but mighty
  2025-04-11
  Comets, moons, tiny twisters, and blueberries — they may be small, but they’re far from insignificant.
• How to spot comet SWAN (C/2025 F2)
  2025-04-11
  Catch this spectacular comet over the next few weeks.
• Timeless collections
  2025-01-31
  From galaxies to stamps to asteroid samples, some collections never go out of style.
• Should you be worried about Asteroid 2024 YR4?
  2025-01-30
  Experts weigh in about the recently discovered near-Earth asteroid 2024 YR4 that has about a 1% chance of impacting Earth on Dec. 22, 2032.
• Are we there yet?
  2024-12-20
  Perseverance makes it to the Jezero Crater rim, and we’re antsy to start another year of space exploration.

Phys.org

• Study unveils volcanic history and clues to ancient life on Mars
  2025-04-19
  In a study co-authored by a Texas A&M University scientist, researchers have revealed new insights into the geological history of Mars's Jezero Crater, the landing site of NASA's Perseverance rover. Their findings suggest that the crater's floor is composed of a diverse array of iron-rich volcanic rocks, providing a window ...
• Scientists probe the mystery of Titan's missing deltas
  2025-04-18
  For scientists who want to learn about the geological history of a planet, river deltas are a great place to start. Deltas gather sediment from a large area into one place, which can be studied to reveal climate and tectonic histories or signs of past life. That's why NASA sent ...
• NASA's Lucy spacecraft is speeding toward another close encounter with an asteroid
  2025-04-18
  NASA's Lucy spacecraft will swoop past a small asteroid this weekend as it makes its way to an even bigger prize: the unexplored swarms of asteroids out near Jupiter.

• Study unveils volcanic history and clues to ancient life on Mars
  2025-04-19
  In a study co-authored by a Texas A&M University scientist, researchers have revealed new insights into the geological history of Mars's Jezero Crater, the landing site of NASA's Perseverance rover. Their findings suggest that the crater's floor is composed of a diverse array of iron-rich volcanic rocks, providing a window ...
• Tracing phosphorus through cosmic evolution: From interstellar space to Earth's biochemistry
  2025-04-16
  There is a large diversity in the chemical composition of astronomical objects such as planets, comets, circumstellar envelopes, or galactic gas clouds. One great challenge in astrochemistry is to understand in detail how this diversity arises from the cosmic backdrop of the cycling of matter between star birth and destruction, ...
• Crystal clues on Mars point to watery and possibly life-supporting past
  2025-04-16
  A QUT-led study analyzing data from NASA's Perseverance rover has uncovered compelling evidence of multiple mineral-forming events just beneath the Martian surface—findings that bring scientists one step closer to answering the profound question: did life ever exist on Mars?
• Scientists find evidence that challenges theories of the origin of water on Earth
  2025-04-16
  A team of researchers at the University of Oxford have uncovered crucial evidence for the origin of water on Earth. Using a rare type of meteorite, known as an enstatite chondrite, which has a composition analogous to that of the early Earth (4.55 billion years ago), they have found a ...
• Scientists uncover why carbon-rich meteorites rarely reach Earth
  2025-04-14
  An international team of researchers may have answered one of space science's long-running questions—and it could change our understanding of how life began. Carbon-rich asteroids are abundant in space yet make up less than 5% of meteorites found on Earth.
• Lunar polar regions could have microbes, modeling study suggests
  2025-04-01
  Could microbes survive in the permanently shadowed regions (PSRs) of the moon? This is what a recent study presented at the 56th Lunar and Planetary Science Conference (LPSC 2025) hopes to address as a team of researchers from the United States and Canada investigated the likelihood of long-term survival for ...
• A step towards life on Mars? Lichens survive Martian simulation in new study
  2025-04-01
  For the first time, researchers have demonstrated that certain lichen species can survive Mars-like conditions, including exposure to ionizing radiation, while maintaining a metabolically active state.
• One day we might seed the universe with life. But should we?
  2025-03-27
  Suppose humanity was faced with an extinction-level event. Not just high odds, but certain-sure. A nearby supernova will explode and irradiate all life, a black hole will engulf the Earth, a Mars-sized interstellar asteroid with our name on it. A cataclysm that will end all life on Earth.

• Why some meteor showers are so unpredictable
  2025-04-17
  Why do comets and their meteoroid streams weave in and out of Earth's orbit and their orbits disperse over time? In a paper published in the journal Icarus, two SETI Institute researchers show that this is not due to the random pull of the planets, but rather the kick they ...

• Study unveils volcanic history and clues to ancient life on Mars
  2025-04-19
  In a study co-authored by a Texas A&M University scientist, researchers have revealed new insights into the geological history of Mars's Jezero Crater, the landing site of NASA's Perseverance rover. Their findings suggest that the crater's floor is composed of a diverse array of iron-rich volcanic rocks, providing a window ...
• Scientists probe the mystery of Titan's missing deltas
  2025-04-18
  For scientists who want to learn about the geological history of a planet, river deltas are a great place to start. Deltas gather sediment from a large area into one place, which can be studied to reveal climate and tectonic histories or signs of past life. That's why NASA sent ...
• NASA's Lucy spacecraft is speeding toward another close encounter with an asteroid
  2025-04-18
  NASA's Lucy spacecraft will swoop past a small asteroid this weekend as it makes its way to an even bigger prize: the unexplored swarms of asteroids out near Jupiter.
• Why some meteor showers are so unpredictable
  2025-04-17
  Why do comets and their meteoroid streams weave in and out of Earth's orbit and their orbits disperse over time? In a paper published in the journal Icarus, two SETI Institute researchers show that this is not due to the random pull of the planets, but rather the kick they ...
• Tracing phosphorus through cosmic evolution: From interstellar space to Earth's biochemistry
  2025-04-16
  There is a large diversity in the chemical composition of astronomical objects such as planets, comets, circumstellar envelopes, or galactic gas clouds. One great challenge in astrochemistry is to understand in detail how this diversity arises from the cosmic backdrop of the cycling of matter between star birth and destruction, ...
• Crystal clues on Mars point to watery and possibly life-supporting past
  2025-04-16
  A QUT-led study analyzing data from NASA's Perseverance rover has uncovered compelling evidence of multiple mineral-forming events just beneath the Martian surface—findings that bring scientists one step closer to answering the profound question: did life ever exist on Mars?
• Scientists find evidence that challenges theories of the origin of water on Earth
  2025-04-16
  A team of researchers at the University of Oxford have uncovered crucial evidence for the origin of water on Earth. Using a rare type of meteorite, known as an enstatite chondrite, which has a composition analogous to that of the early Earth (4.55 billion years ago), they have found a ...
• How crater shapes are revealing more about Titan's icy crust
  2025-04-15
  Titan, Saturn's largest moon, is a fascinating world that is unique among moons of the outer solar system. It's shrouded in a thick, hazy atmosphere rich in nitrogen and methane and it's the only moon with a substantial atmosphere and the only place besides Earth known to have stable bodies ...
• Molten Martian core could explain red planet's magnetic quirks
  2025-04-15
  Like Earth, Mars once had a strong magnetic field that shielded its thick atmosphere from the solar wind. But now only the magnetic imprint remains. What's long baffled scientists, though, is why this imprint appears most strongly in the southern half of the red planet.
• Why the meteorites that hit Earth have less water than the asteroid bits brought back by space probes
  2025-04-15
  Much of what scientists know about the early solar system comes from meteorites—ancient rocks that travel through space and survive a fiery plunge through Earth's atmosphere. Among meteorites, one type—called carbonaceous chondrites—stands out as the most primitive and provides a unique glimpse into the solar system's infancy.

• How to catch the shooting stars of spring's first meteor shower, the Lyrids
  2025-04-18
  When the Lyrid meteor shower reaches its peak, it will be spring's first chance to see shooting stars.
• A 'fireball' lights up Mexico City skies, sparking awe and plenty of memes
  2025-04-17
  A bright object, initially appearing to be a meteorite, lit up the skies over Mexico's capital around 3 a.m. Wednesday, stretching over plains, volcanoes and small towns.
• New observations show the asteroid that won't hit Earth resembles a spinning hockey puck
  2025-04-09
  The asteroid that once had a small chance of striking Earth and now might slam into the moon resembles a spinning hockey puck, scientists said Tuesday.
• Rising odds asteroid that briefly threatened Earth will hit moon
  2025-04-03
  A huge asteroid that was briefly feared to strike Earth now has a nearly 4% chance of smashing into the moon, according to new data from the James Webb Space Telescope.

Science Daily

• Ever wonder why some meteor showers are so unpredictable?
  2025-04-16
  Why do comets and their meteoroid streams weave in and out of Earth's orbit and their orbits disperse over time? Researchers show that this is not due to the random pull of the planets, but rather the kick they receive from a moving Sun.
• Crystal clues on Mars point to watery and possibly life-supporting past
  2025-04-16
  A new study analyzing data from NASA's Perseverance rover has uncovered compelling evidence of multiple mineral-forming events just beneath the Martian surface -- findings that bring scientists one step closer to answering the profound question: Did life ever exist on Mars?
• Scientists find evidence that overturns theories of the origin of water on Earth
  2025-04-16
  Researchers have helped overturn the popular theory that water on Earth originated from asteroids bombarding its surface; Scientists have analyzed a meteorite analogous to the early Earth to understand the origin of hydrogen on our planet. The research team demonstrated that the material which built our planet was far richer ...
• Molten Martian core could explain red planet's magnetic quirks
  2025-04-15
  First ever supercomputer simulations of Mars with a fully molten core could explain the Red Planet's unusual magnetic field. Billions of years ago, Mars had an active magnetic field. Mysteriously, its imprint is strongest in the southern hemisphere. Researchers found that Mars could have produced a one-sided magnetic field with ...

BBC Science

• Asteroid contains building blocks of life, say scientists
  2025-01-29
  Bennu contains minerals and thousands of organic molecules, including the chemical components that make up DNA.

wired.com

• The Wild Plan to Terraform Mars by Slamming Asteroids Into It
  2025-04-16
  If future Mars colonizers want to survive without pressure suits, they’ll need to generate a denser atmosphere. One way to achieve this could be to bombard the Red Planet with water-rich asteroids.
• How to Watch the Lyrids Meteor Shower
  2025-04-15
  The second major meteor shower of the year starts today and peaks on the night of April 21–22. Here’s everything you need to know to watch it and the many other showers that will appear in 2025.

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