Hubble Space Telescope view of Saturn, June 2019
InSight seismometer on Mars
An artist's concept shows the Dragonfly drone above Titan
Chandrayaan 2 view of lunar north polar region

Update - Multi-talented Austinite takes role after Sandy Wood retires

The New Voice of StarDate

Multi-talented Austinite takes role after Sandy Wood retires More »

StarDate Radio: September 17 — Cosmic Strings

In its first fraction of a fraction of a fraction of a second, the universe expanded and cooled in a...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 »

Stargazing: September 11

M15

The globular cluster M15 arcs across the sky this evening. It is a family of more than a hundred thousand...More »

Current Magazine

cover of September-October 2019 issue

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

Sky Almanac cover

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.

Order online

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