Stoppage comes the same week a government report finds few problems with permitting.

It's really difficult to get a clear sign of life on an exoplanet.

Warmer temperatures and increased carbon dioxide will boost arsenic levels in rice.

New robotic landing gear draws on the crane fly's unique appendages for landing on uneven surfaces.

Building an observatory on the Moon would be a huge challenge—but it would be worth it.

New model uses 6 differential equations relating to a rotating rigid body for best strike conditions.

Zoom in over rural North Texas for a spacey surprise.

Harvard won't give government a say in faculty hiring; Trump threatens its tax status.

The NASA official in charge of Gateway briefed Ars on the program's challenges and achievements.

Its performance isn't great, but its endurance is similar to standard lithium-ion.