Stargazers in the U.S. will find the slender form of the crescent moon roughly 20 degrees above the western horizon right at ...

Mercury reaches its greatest elongation, 26 degrees east of the sun on July 4. From latitude 40 degrees north, the ...

The best time to catch Mars and Regulus — known as the "Heart of the Lion"— will be just after twilight fades and the stars ...

Mars isn’t a bright, fire-engine red, but the iron oxide in its rocks makes it appear redder than other planets, especially ...

By the following night, Mars will have officially entered the Spring Triangle, having (just) crossed the imaginary line joining Regulus and Arcturus. The Red Planet will continue to skim along the ...

This month will usher in two separate conjunctions — one between the moon and a rarely-visible Mercury, and another between the moon and Mars.

The globular cluster Messier 22 (M22) reaches its highest point in the sky around midnight local time, specifically for observers south of 46° N latitude, since M22’s position favors the Southern ...

Our picks of the best small telescopes are all under 10kg, making them perfect for travel. With Prime Day coming up on July 8-11, it's a good time to grab a bargain.

Sometimes the best stargazing happens on ordinary nights. Late June 2025 showcases consistent cosmic rhythms: Venus is ...

Observing Mars with probes If you look closely at pictures of Mars taken by rovers on its surface, you can see that most of the planet isn’t purely red, but more of a rusty brown or tan color.