Combined radio and visual view of the Perseus galaxy cluster
Twilight over McDonald Observatory
Visible and infrared image of Ring Nebula
The moon Daphnis stirs up Saturn's rings
False-color image of the Boomerang Nebula, which is being created by a dying star

StarDate Radio: June 26 — Alexis Bouvard

Astronomers are searching the distant precincts of the solar system for a possible Planet 9. The search was triggered by...More »

StarDate Radio: June 25 — Summer Triangle

The sky offers plenty of calendar markers to help note the turning of the seasons. At the start of summer,...More »

Stargazing: June 25

The Summer Triangle is in good view at nightfall. Its brightest point is Vega, in Lyra, the harp, which is...More »

StarDate Radio: June 24 — Orange Triplets

Stars come in all types. One of the most common types is the orange dwarf — which is also one...More »

Stargazing: June 24

A system of three orange stars is in the south-southwest at nightfall, not far to the lower right of the...More »

StarDate Radio: June 23 — Storm Damage

Solar storms can create all sorts of trouble. They can knock out power grids, cripple orbiting satellites, and disrupt airline...More »

Stargazing: June 23

The Moon is “new” today, as it crosses the imaginary line between Earth and Sun. It will return to view...More »

StarDate Radio: June 22 — Quiet Sun

The Sun has been unusually “quiet” in recent years — the quietest in more than a century. And forecasters say...More »

Stargazing: June 22

Eltanin, an Arabic name that means “the serpent,” is the brightest star of Draco, the dragon, which is high in...More »

StarDate Radio: June 21 — Busy Sun

The Sun is one of the steadiest of all stars. Even so, its energy output does vary — by less...More »

Stargazing: June 21

Ophiuchus, the serpent bearer, passes high across the south tonight, above Sagittarius and Scorpius. Ophiuchus is the only one of...More »

StarDate Radio: June 20 — Summer Solstice

The modern calendar is one of the oldest and most basic astronomical instruments. It measures the relative motions of Earth...More »

Stargazing: June 20

Summer begins tonight in the northern hemisphere, when the Sun stands farthest north for the year — a moment known...More »

Current Magazine

cover of July-August 2017 issue

Our July/August issue of StarDate magazine will focus on the Great American Eclipse. On August 21, a total solar eclipse will be visible across a wide swath of the United States, with a partial eclipse in store for the rest of country. We'll tell you how to make the most of it.

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