Deep-sky objects shine and the giant planets show off their satellites as the bright light from the Moon disappears from our ...

The solar system’s largest planet shines bright as the Moon wanes and Saturn’s moons dance in the sky this week.

The Fighting Dragons of Ara, also called the Rim Nebula and cataloged as NGC 6188, comprises dark, star-forming clouds and bright young suns.

In 1972, Apollo 17 carried the last batch of astronauts to the lunar surface. But during that same year, NASA was already beginning the design and develop their next generation of crew-carrying craft.

On one hand, the speed of light is just a number: 299,792,458 meters per second. And on the other, it’s one of the most important constants that appears in nature and defines the relationship of ...

The Moon has always beckoned. Long before our ancestors realized “wandering stars” were actually planets sharing the solar system with Earth, they recognized the Moon was a sort of sibling to our ...

Albert Einstein’s theory of general relativity is just over 100 years old, and so far it has predicted the interaction between celestial objects and the space-time field very well. There are a few ...

(This article was originally published in the May 2022 issue of Astronomy). St. Augustine said of time, “If no one asks me, I know what it is. If I wish to explain to him who asks, I don’t know.” Time ...

In the late 1970s, Vera Rubin and Kent Ford of the Carnegie Institution of Washington stared, confused, at the punch-card readouts from their observations of the Andromeda Galaxy. The vast spiral ...

The OSIRIS-REx spacecraft returned triumphantly to Earth in 2023 after collecting 4.3 ounces (121.6 grams) of precious grains of dust and rock from the asteroid Bennu in 2020. While that sample return ...

The Sky This Week from November 28 to December 5: 2025’s last Full Moon, a Super Moon ...

In this episode, Astronomy magazine Editor Emeritus Dave Eicher invites you to head out on the evening of January 27 to see the Moon pass the Pleiades star cluster, which lies in the constellation ...