What is the difference between a moon and a planet? Trick question! According to scientific definitions, there often isn’t much of a difference at all. That might seem counterintuitive, but it’s true.

If you were up early enough on Friday, Sept. 19, you may have noticed the bright star shining next to the crescent moon in the morning sky. Except it wasn't a star, it was the planet Venus. And it was ...

A conjunction is an astronomical event in which at least two planets – or, in this case, other celestial bodies – appear to our vantage from Earth to be close together in the sky. The trio of ...

Wondering if it's a full moon tonight or if the planet Venus and Regulus star will be visible again today? Here's what to know about this weekend's celestial events. Tonight's waning crescent moon ...

The phenomenon of a Full Moon arises when our planet, Earth, is precisely sandwiched between the Sun and the Moon. This ...

Jupiter will reach its highest point in the sky around dawn, when, from mid-northern latitudes, it will appear about 20 ...

Aging stars may be destroying the giant planets orbiting closest to them, according to a new study by astronomers at UCL and ...

Sept. 30 (UPI) --A new study published Tuesday suggested that the moon's far side of the moon may be colder than the near side. The study, published in the journal Nature Geoscience, found that rock ...

If you were up early enough on Friday, Sept. 19, you may have noticed the bright star shining next to the crescent moon in the morning sky. If you missed the view on Sept. 19, will you get another ...

A celestial event called a conjunction featured the moon, Venus, and the star Regulus on Sept. 19. The trio will still be shining on Sept. 20, but Venus and Regulus will be further from the moon. The ...