Meet the author: Dr. Phil Plait is an astronomer, author, and science communicator with a PhD in astronomy at the University ...

There are plenty of celestial landmarks you can see with the naked eye, and this month, you can view Mars and four of Jupiter’s 95 moons.

Enjoy dark skies for evening observing, then catch a meteor shower and a planetary conjunction in the morning sky this week.

On the morning of April 21, you’ll be able to see Venus, Mercury, and Saturn low in the east — all without a telescope.

Venus, Saturn, and Mercury are full of surprises this month, and they have one more awe-striking display in store. Before ...

April’s planetary parade has fewer planets. Only four will line up: Venus, Saturn, Mercury and Neptune. April's parade of ...

Mars and Jupiter take center stage this month. Mars is visible high overhead after dark, shining bright and red as it moves steadily eastward throughout April. Meanwhile, Jupiter remains an early ...

Four of Earth’s neighbors are about to appear in a planetary alignment. Those four planets — Mercury, Venus, Neptune and ...