The Last Quarter Moon floats in the predawn sky, preparing to occult the Pleiades from some parts of the world.

Space launch deregulation begins as President Trump signs order to relax FAA licensing and amend Part 450 rule to accelerate ...

The sidereal day is defined to be the length of time for the March equinox to return to your celestial meridian. Compare this ...

The waning Moon passes Jupiter, Venus, and Mercury before dawn, while Titan’s shadow transits Saturn in the sky this week.

The largest body in the main belt comes to a brief standstill in the sky, visible before sunrise in Cetus the Whale.

14. The Sun emits a continuous stream of plasma called the solar wind. On Earth, the most visible effect of the solar wind is the production of the northern and southern lights, the aurorae. Intense ...

Today in the history of astronomy, the first photo of Earth by a satellite is taken.

The solar system’s smallest planet is just now becoming visible before dawn. Bright Jupiter and Venus point the way.

ULA Vulcan Launch completes its first National Security Space Launch mission, taking the reins from the Delta IV Heavy for ...

Using AI, astronomers discover a new type of supernova, SN 2023zkd, the strongest evidence yet of a dying star being ...

If you own a telescope with an aperture (the size of the lens or mirror) of 4 inches or more, there’s a wonderful object now ...

This bright, easy-to-find open cluster of young stars looks to some like a flock of birds flying through the sky.