Multi-talented Austinite takes role after Sandy Wood retires More »
★Stargazing: September 16
BL Lacertae, a galaxy a billion light-years away, is firing a beam of energy in our direction — a “jet”...More »
▶StarDate Radio: September 16 — BL Lacertae
A galaxy a billion light-years away is firing a beam of energy in our direction. Fortunately, it’s not an intergalactic...More »
▶StarDate Radio: September 15 — Lacerta
A star doesn’t have to be big to be brash. Indeed, some of the most active stars are also some...More »
★Stargazing: September 15
Lacerta, the lizard, is high in the east-northeast at nightfall, outlined by a few puny stars. A decade ago, however,...More »
▶StarDate Radio: September 14 — Changing Sun
The Sun is going through a big change. One cycle of activity is ending, while another is just beginning. Neither...More »
★Stargazing: September 14
The stars Sirius and Procyon are in the east and southeast at first light. Sirius is the brightest star in...More »
▶StarDate Radio: September 13 — Harvest Moon
One of the most popular astronomical events of the year happens tonight: the Harvest Moon. It’s the full Moon that’s...More »
★Stargazing: September 13
One of the most popular astronomical events of the year happens tonight: the Harvest Moon. It is the full Moon...More »
★Stargazing: September 12
The star cluster Messier 39 stands high in the northeast at nightfall, to the lower left of Deneb, the bright...More »
▶StarDate Radio: September 12 — Marsquakes
The surface of Mars is pretty quiet. It doesn’t constantly move and shake, as Earth’s does. Even so, it does...More »
▶StarDate Radio: September 11 — Helium
Helium is the second-most-abundant element in the universe — only hydrogen is more common. It accounts for about a quarter...More »
Current Magazine
Our September/October issue explores how magnetic fields influence star formation. We also celebrate the bicentennial of the birth of Leon Foucault, the French physicist whose pendulum demonstrated Earth's rotation.
2019 Sky Almanac
Plan for this year's stargazing adventures with our 2019 Sky Almanac, which offers skywatching tips, charts, Moon phases, and much more. And for the rest of the year, we've reduced the price! Order online or call 1-800-STARDATE during regular business hours.
