The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth’s terra firma. The terrestrial planets are the four innermost planets in the ...

NASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery.

I was Geology and Mineralogy (Geo) Science Team lead today, and my day started with a bang and a drum roll — delivered by a rare winter thunderstorm (rare here in England, at least). I did lose power ...

In March, a NASA-led research team announced that Jakobshavn Isbrae, Greenland’s fastest-flowing and thinning glacier over the past two decades, is now flowing more slowly, thickening and advancing ...

The eclipse on Saturday, Oct. 14, 2023, will be an annular solar eclipse. An annular solar eclipse happens when the Moon passes between the Sun and Earth while it is at its farthest point from Earth.

NASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery.