Planetary Science
- Planetary Science
NASA’s Ingenuity helicopter made history by flying on Mars
An autonomous helicopter just lifted itself into the air on Mars, marking the first time a vehicle has flown on a planet other than Earth.
- Planetary Science
How the laws of physics constrain the size of alien raindrops
Physics limits the size of raindrops, no matter what they’re made of or what planet they fall on.
- Planetary Science
Earth sweeps up 5,200 tons of extraterrestrial dust each year
Thousands of micrometeorites collected from Antarctica come from both comets and asteroids, a new study suggests.
- Planetary Science
A meteor may have exploded over Antarctica 430,000 years ago
Tiny spherules recovered from a mountaintop suggest a space rock broke apart midflight and sprayed debris across thousands of kilometers.
- Space
50 years ago, experiments hinted at the possibility of life on Mars
In 1971, lab experiments suggested organic molecules could be made on Mars. Fifty years later, robots are searching for such signs of life on the planet itself.
- Space
‘Oumuamua may be a chip knocked off an icy, Pluto-like exoplanet
If the first interstellar visitor were a shard of nitrogen ice, it would explain some of its unusual behavior when it passed through our solar system.
- Space
Most of Mars’ missing water may lurk in its crust
Computer simulations of the fate of Mars’ water may explain why the Red Planet turned into a desert, when so little of its water has escaped into space.
- Planetary Science
Watch real video of Perseverance’s Mars landing
NASA’s Perseverance rover filmed its own landing on Mars. Here’s that video.
- Planetary Science
NASA’s Perseverance rover has touched down on Mars
The spacecraft will arrive at Mars on February 18, joining missions from China and the United Arab Emirates.
- Earth
Fossil mimics may be more common in ancient rocks than actual fossils
Evidence of early life may be harder to preserve than pseudofossils — structures that form abiotically but resemble living remnants.
- Space
How future spacecraft might handle tricky landings on Venus or Europa
Scientists are getting inventive with ways to touch down on these worlds, where landers will face obstacles not seen elsewhere in the solar system.
- Space
Hayabusa2’s asteroid dirt may hold clues to the early solar system
“We collected the treasure box,” a Japanese space scientist announced after a capsule holding samples from asteroid Ryugu safely landed on Earth.
