NASA shares the moon’s exact distance from Earth and its impact on ocean tides, solar eclipses, and space travel. See how ...

This diagram shows how the Moon appears to change shape as it orbits (circles) the Earth due to which part of it is facing the Sun. When the lit area of the Moon we see is getting bigger each day ...

This isotope is found at a ratio of about one per 2,500 helium-4 ions, the latter being the common version of helium.

Scientists confirm the Sun's charged particles can create water on the Moon. Learn how solar wind interacts with lunar soil.

The new moon occurs April 27, and a day later Venus and Saturn will make a close approach to each other (known as a ...

Astronomers have discovered a huge single object that will glow near the Earth and the Sun. It is a T-shaped cloud called Eos ...

In this type of event, the moon only blocks part of the sun’s face, creating a crescent shape in which it appears the moon is taking a “bite” out of the sun. This event will be visible to ...

In this type of event, the moon only blocks part of the sun's face, creating a crescent shape in which it appears the moon is taking a "bite" out of the sun. This event will be visible to more ...