Pluto is a bit of a loner. The dwarf planet is no longer considered a regular planet; it does not orbit on the same plane as ...

"The results reported here can be crucial when down-selecting which samples, if not all, are returned to Earth." ...

Regulus, a distant star, Venus and our moon will be visible during a conjunction tonight, and how Californians can best see ...

Here's what happens as the direct rays of the sun slip south of the equator as the seasons change.

Did you see the bright star next to the moon? That was Venus, and part of a conjunction between the moon, Venus and the star ...

Much as we may treasure and proclaim our independence, we actually live in a protective bubble called the heliosphere.

The moon and Venus will shine vividly alongside a bright star in the early morning in a celestial rendezvous that should be ...

The spacecraft will study the heliosphere, a vast bubble created by the Sun's solar wind. This bubble acts like a shield, ...

This invisible boundary is known as the heliosphere. It's the endpoint beyond which our Sun does not have any reach or power.

NASA to stream Sept. 23 IMAP mission launch aboard SpaceX IMAP to study solar wind and heliosphere science at Lagrange Point ...

SummaryNASA's new Interstellar Mapping and Acceleration Probe, or IMAP, will launch no earlier than Tuesday, Sept. 23 to ...

Researchers were able to determine that the asteroid came from the inner Asteroid Belt, the region between Mars and Jupiter, ...