Map of the Milky Way's spiral arms
Hubble Space Telescope view of a gravitational lens
View of ice field on Pluto from New Horizons
Cassini infrared view of Titan
Infrared view of the Orion Nebula

StarDate Radio: July 26 — Double Orange

Billions of years from now, our Sun will puff up to become an orange giant, shining hundreds or thousands...More »

StarDate Radio: July 25 — Scutum Arm

Our home galaxy is a spiral. We can’t see it from the outside, though, so we don’t know how...More »

Stargazing: July 25

The constellation Scutum stands to the upper left of teapot-shaped Sagittarius as night falls. Under dark skies, you can see...More »

StarDate Radio: July 24 — Scorpius Clusters

Two big, beautiful stellar families narrowly avoid the sting of the scorpion. They stand just above the stars that...More »

Stargazing: July 24

The big, beautiful star clusters M6 and M7 stand just above the stars that mark the scorpion’s stinger. M7 is...More »

StarDate Radio: July 23 — The Stinger

The celestial scorpion has a potent stinger. The two stars at the end of its tail — the stars...More »

Stargazing: July 23

The celestial scorpion has a potent stinger. The two stars at the end of its tail, which mark the stinger,...More »

StarDate Radio: July 22 — Scorpius X-1

Most of us are familiar with X-rays because doctors and dentists use them to diagnose problems with our bodies...More »

Stargazing: July 22

One of the largest stars in the galaxy is Mu Cephei, in Cepheus. It is visible in the northeast in...More »

StarDate Radio: July 21 — Scorpius

A beautiful and well-known constellation skitters low across the south on summer nights. It forms a distinctive hook shape,...More »

Stargazing: July 21

The beautiful constellation Scorpius skitters low across the south on summer nights. It forms a distinctive hook shape, and its...More »

StarDate Radio: July 20 — One Year Later, III

Even as New Horizons flew past Pluto a year ago this month, mission planners were already thinking about a...More »

Stargazing: July 20

Hercules stands directly overhead this evening. Four moderately bright stars form a lopsided square that represents his body, while his...More »

Current Magazine

cover of July-August issue

In this issue, we'll explain the latest twist on the search for extraterrestrial life. And we'll bring you up to date on New Horizons, laying out discoveries made so far by the historic flyby of Pluto and its cadre of moons.

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