Today marks the start of Northern Hemisphere summer, and also offers a chance to view night-glowing clouds if you’re lucky.

#2. The Moon came from Earth. It didn’t form beside our planet, and Earth’s gravity didn’t capture it. The latest theory says ...

Summer arrives for northern observers as the Moon visits Venus, Uranus, and Mercury. Plus: globular cluster M15, double star ...

Honda completes its first reusable rocket test in Japan and plans suborbital launches by 2029. Discover how the company aims to expand into space technology to enhance mobility and satellite services.

Now nearing a close conjunction, Saturn and Neptune sit just to the right of the crescent Moon in the morning sky.

The summer solstice occurs this year on Friday, June 20, at 10:42 P.M. EDT. After the June solstice, days will get shorter ...

The innermost planets straddle nighttime, with Mercury in the evening and the greatest western elongation of Venus in the morning. Jupiter joins Mercury in early twilight for a few evenings, both ...

Earth’s companion has allowed astronomers to define lunar cycles, navigate without technology, and understand celestial ...

This week’s launches include Axiom 4, a historic crewed mission to the ISS, plus multiple satellite deployments from SpaceX ...

Vesta reaches its stationary point in Virgo today. This bright asteroid is easy to find from any location in just a few ...

When the Sun expands into a red giant, it will swallow the inner solar system and raise the temperature in the outer regions.

A cloud of energetic gas lit up by a collision of galaxies spans nearly 20 million light-years, leading astronomers to ...