On May 23, 1967, a highly active sunspot region, McMath Region 8818, produced a series of solar flares. The events were massive, including a rare white-light flare and one of the largest solar radio ...
Slicing through the Montes Alpes mountain range, Vallis Alpes is a favorite feature to view on the First Quarter Moon.
The final mission before the landmark Apollo 11, Apollo 10 served as a dress rehearsal, testing every aspect of the Moon landing except for the actual landing itself. On May 18, the crew of Commander ...
The smallest planet appears after sunset as the waxing Moon reaches First Quarter and star clusters shine in the sky this ...
Ganymede and Europa transit Jupiter tonight, while Io disappears in an occultation. West Coast observers can catch a double ...
In the Ask Astro column of the April 2026 issue is a photograph of planetary nebula NGC 6302. The caption says that NGC 6302 ...
Venus and Jupiter are visible in the evening, while there's a conjunction of Mars and Uranus in the predawn sky.
RCW 36 boasts an open cluster of massive young stars at its heart, surrounded by glowing clouds of hydrogen gas.
As July begins, three planets adorn the early evening sky, while more solar system worlds are visible before dawn.
Space exploration is not just something we watch others do. It is an endeavor we can join from our backyards.
Here’s how subscribers can read the July 2026 digital issue of Astronomy magazine via our website and our iOS app.
In 1878, Williamina Fleming immigrated to Boston from Scotland with her husband – but he abandoned her shortly after they ...
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