By studying seismic waves, researchers have found a layer deep beneath the surface of Mars that could contain enough liquid ...

President Donald Trump ran on a promise of more fossil fuels, fewer environmental regulations, and outright climate denial — and now he’s following through. His administration is gutting clean ...

Launch velocity: Payloads need to achieve a velocity of 1.7 km/s to reach stable orbit, significantly less than the 11.2 km/s ...