Glaciers flowed on ancient Mars, but slowly

The weight and grinding movement of glaciers has carved distinctive valleys and fjords into Earth's surface. Because Mars lacks similar landscapes, researchers believed ancient ice masses on the Red Planet must have been ...

What would it take to find life on Venus?

Life on Venus, or the possibility thereof, has been a hot topic as of late. There's also been plenty of controversies, including the (still disputed) discovery of phosphine, a potential biomarker in the atmosphere. The best ...

Underwater snow gives clues about Europa's icy shell

Below Europa's thick icy crust is a massive, global ocean where the snow floats upwards onto inverted ice peaks and submerged ravines. The bizarre underwater snow is known to occur below ice shelves on Earth, but a new study ...

Astronomy data and the search for habitable worlds

In 1610, Galileo Galilei peered through a telescope and observed, "I have seen Jupiter accompanied by three fixed stars, totally invisible by their smallness. The planets are seen very rotund, like little full moons." In ...

The search for ancient life on Mars

The first year of the Perseverance rover mission on Mars captured the imaginations of scientists and the public alike with an interplanetary helicopter flight and the first chance to hear the sounds of the red planet.

Space agriculture boldly grows food where no one has grown before

Whether to spend money on outer space exploration or to apply it to solve serious problems on Earth, like climate change and food shortages, is a contentious debate. But one argument in favor of space exploration highlights ...

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