Many of the features on the Moon are named after astronomers. So are features on Mars and other planets and...More »
▶StarDate Radio: July 21 — Two Crosses
The night sky features two great crosses -- one in the northern hemisphere, and the other in the south.
The...More »
★Stargazing: July 21
The Northern Cross is another name for Cygnus, the swan, which sails high overhead on summer evenings. When we look...More »
▶StarDate Radio: July 20 — Moon and Jupiter
The biggest moon in the solar system is bigger than the planet Mercury. It’s the only moon known to generate...More »
★Stargazing: July 20
Jupiter, the largest planet in the solar system, stands just below the Moon this evening and looks like a brilliant...More »
★Stargazing: July 19
Spica is the bright star to the lower right of the Moon tonight. Although it looks like a single star,...More »
▶StarDate Radio: July 19 — Moon and Companions
The Sun isn’t bothered by much. That’s because it orbits the center of the galaxy on its own. But most...More »
★Stargazing: July 18
Skywatchers at far-southern latitudes can see Lupus, the wolf, leaping low across the sky on summer evenings. You need dark...More »
▶StarDate Radio: July 18 — Chemistry Set
It’s almost a cliché these days, but it’s true nonetheless: We are all made of starstuff. The calcium in our...More »
★Stargazing: July 17
Cassiopeia the queen sits low in the north-northeast at nightfall, then wheels high to the north at first light. Its...More »
▶StarDate Radio: July 17 — Supernova Remnants
Cassiopeia the queen sits low in the north-northeast at nightfall, then wheels high to the north at first light....More »
★Stargazing: July 16
Delphinus, the dolphin, is in good view in the east at nightfall. This tiny pattern of stars really does look...More »
▶StarDate Radio: July 16 — Deadly Blasts
The death of a star can produce some spectacular fireworks. The star blasts all or most of itself into space,...More »
Current Magazine
Our July/August issue explores the idea that life on worlds like Earth may be seeded by asteroid and comet impacts. And we'll discuss cosmic superlatives — the biggest, the fastest, the oldest, and more.
2018 Sky Almanac
Plan all of your stargazing adventures with our 2018 Sky Almanac, which offers skywatching tips, charts, Moon phases, and much more. Order online or call 1-800-STARDATE during regular business hours.
