Planetary Science
-
- Tech
Growing need for space trash collectors
On April 2, for the fifth time in less than three years, the International Space Station fired its engines to dodge a piece of orbital debris that appeared on a collision path. Other spacecraft also regularly scoot out of the way of rocket and satellite debris. Such evasive action will be needed increasingly frequently, a new study finds.
- Planetary Science
White dwarfs gobble Earthlike treats
Astronomers have found elements in the dead stars’ atmospheres that suggest rocky planetary bodies once orbited the stars.
- Planetary Science
Messages from Mercury
The latest data from a NASA spacecraft give compositional clues and reveal craters that could hold frozen water
- Planetary Science
Saturn’s rings explained
A huge shattered moon could have sprayed ice particles around the newborn planet.
- Planetary Science
New rock type found on moon
Odd spots on the lunar farside could be ancient material that originated deep inside the moon.
- Planetary Science
Venus, erupting?
Lava flow suggests recent volcanism on Earth’s nearest planetary neighbor.
- Planetary Science
A comet’s tail
Already under observation by astronomers, Hartley 2 will be visible in dark skies when it passes Earth on October 20.
- Planetary Science
Life’s cold start
Primordial molecules could have replicated themselves in a slushy place, new experiments suggest.
- Planetary Science
Worldwide slowdown in plant carbon uptake
A decade of droughts has stifled the increasing growth of terrestrial vegetation.
-
- Astronomy
Heftiest stars discovered
At more than 200 times sun’s mass, this giant sets a new record.
