Detonating a nuclear weapon on or near an asteroid is one of several options for defending the Earth from an impact. Here's what nuking an asteroid might actually do, and why it isn't always the best option.

New research suggests liquid water might be hiding under the surface of Mars. Could life be there too?

With all the advances in private space exploration, why do taxpayers still pay for space science missions?

The tentative discovery hints at an habitat where life could potentially thrive.

From X-ray imaging to slithering beneath Enceladus’ crust, space technology is always expanding what we can see for ourselves.

The snake-like robot is being designed to autonomously navigate the challenging terrain of Saturn’s moon Enceladus, including descending into fissures in the moon’s icy crust. The skills it needs in order to explore this distant, unfamiliar world may make EELS well equipped to explore even more alien worlds, perhaps including exoplanets.

Knowing that you've found signs of life beyond Earth may not be as clear-cut and simple as one might think.