Lunar Orbiter 1 views of Earthrise over the Moon
The bow of Sagittarius
2009 view of Perseid meteors
SOHO view of a Kreutz Sun-grazing comet

StarDate Radio: August 24 — Moon and Aldebaran

The Moon slides toward the eye of the bull early tomorrow. In fact, it’ll pass directly in front of the...More »

StarDate Radio: August 23 — Mars and Antares

Mars passes its legendary “rival” the next few evenings — the star Antares, at the heart of Scorpius, the scorpion....More »

Stargazing: August 23

Mars passes its legendary “rival” the next few evenings — the star Antares, at the heart of Scorpius. The two...More »

StarDate Radio: August 22 — Explosive Debris

Tons of space dust rain down on Earth every day. Most of it comes from asteroids and comets in our...More »

Stargazing: August 22

If we could see the stars behind the Sun now, we would notice that it is almost touching Regulus, the...More »

StarDate Radio: August 21 — Other Suns

If you’re looking for life in other star systems, it’s probably best to start with stars that resemble our...More »

Stargazing: August 21

Chara is one of the brightest stars Canes Venatici, the hunting dogs. It’s in the west-northwest at nightfall, between the...More »

StarDate Radio: August 20 — Few Suns

Plenty of bright stars decorate the sky on these warm summer evenings. Among others, yellow-orange Arcturus is in the west,...More »

Stargazing: August 20

Plenty of bright stars decorate the sky on warm summer evenings. Among others, yellow-orange Arcturus is in the west, red-orange...More »

StarDate Radio: August 19 — Milton Humason

Over the centuries, astronomers have come from many backgrounds. Among many other professions, they’ve been astrologers, beer makers, and industrialists....More »

Stargazing: August 19

A couple of implements for holding water bracket the midnight sky at this time of year. The teapot of Sagittarius...More »

StarDate Radio: August 18 — Lunar Orbiter 1

Until a half-century ago, maps of the lunar surface were pretty coarse. Even the best telescopes couldn’t show features smaller...More »

Stargazing: August 18

The Great Square of Pegasus rises in the east not long after sunset, promising the return of some of autumn’s...More »

Current Magazine

cover of September-October issue

In this issue, get the latest on the search for a large, unseen planet some astronomers think is lurking in the Kuiper Belt, and meet pioneering 19th-century British astronomer Elizabeth Brown, who traveled to Russia to study a solar eclipse.

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