Aaron L. Gronstal

Astrobiologists are developing 'intelligent' instruments that could help future robotic explorers make their own decisions about where and how to collect data on Mars and other solar system bodies.

New findings suggest that alien plants may be able to photosynthesize a broad range of wavelengths.

What caused the mass extinction at the Triassic-Jurassic boundary?

A new study at an impact crater in Canada is helping mission planners develop the most effective methods for exploring the lunar surface.

Ancient biomarkers prove microbes oxidized methane 300 million years ago.

Why was the early Earth covered in liquid water and not ice?

The finding may help scientists search for signs of life on other planets.

Researchers discovered unique microbes deep beneath the Earth's surface.

New ground tests will help Phoenix detect signs of life on Mars.

New techniques allowed radar observations of the moon's Orientale basin.

Asteroid impacts could help spread life throughout the universe.

Ocean floor sedimentary rocks unravel climate change during the Jurassic.