Astronomy Picture of the Day

zdjęcie Twin Galaxies in Virgo

Twin Galaxies in Virgo

Spiral galaxy pair NGC 4567 and NGC 4568 share this sharp cosmic vista with lonely elliptical galaxy NGC 4564. All are members of the large Virgo Galaxy Cluster. With their classic spiral arms, dust lanes, and star clusters, the eye-catching ...

Zobacz pełny opis

zdjęcie Sharpless 308: Star Bubble

Sharpless 308: Star Bubble

Blown by fast winds from a hot, massive star, this cosmic bubble is huge. Cataloged as Sharpless 2-308 it lies some 5,200 light-years away toward the constellation of the Big Dog (Canis Major) and covers slightly more of the sky than a Full Moon. ...

Zobacz pełny opis

zdjęcie Wide Field View of Great American Eclipse

Wide Field View of Great American Eclipse

Only in the fleeting darkness of a total solar eclipse is the light of the solar corona easily visible. Normally overwhelmed by the bright solar disk, the expansive corona, the sun's outer atmosphere, is an alluring sight. But the subtle details ...

Zobacz pełny opis


zdjęcie Ultima Thule from New Horizons

Ultima Thule from New Horizons

How do distant asteroids differ from those near the Sun? To help find out, NASA sent the robotic New Horizons spacecraft past the classical Kuiper belt object 2014 MU69, nicknamed Ultima Thule, the farthest asteroid yet visited by a human ...

Zobacz pełny opis

zdjęcie The Long Gas Tail of Spiral Galaxy D100

The Long Gas Tail of Spiral Galaxy D100

Why is there long red streak attached to this galaxy? The streak is made mostly of glowing hydrogen that has been systematically stripped away as the galaxy moved through the ambient hot gas in a cluster of galaxies. Specifically, the galaxy is ...

Zobacz pełny opis

zdjęcie From the Northern to the Southern Cross

From the Northern to the Southern Cross

There is a road that connects the Northern to the Southern Cross but you have to be at the right place and time to see it. The road, as pictured here, is actually the central band of our Milky Way Galaxy; the right place, in this case, is dark ...

Zobacz pełny opis

zdjęcie The Umbra of Earth

The Umbra of Earth

The dark, inner shadow of planet Earth is called the umbra. Shaped like a cone extending into space, it has a circular cross section most easily seen during a lunar eclipse. For example, on January 21 the Full Moon slid across the northern half ...

Zobacz pełny opis

zdjęcie Moon Struck

Moon Struck

Craters produced by ancient impacts on the airless Moon have long been a familiar sight. But only since the 1990s have observers began to regularly record and study optical flashes on the lunar surface, likely explosions resulting from impacting ...

Zobacz pełny opis

zdjęcie Matterhorn, Moon, and Meteor

Matterhorn, Moon, and Meteor

Fans of planet Earth probably recognize the Matterhorn in the foreground of this night skyscape. Famed in mountaineering history, the 4,478 meter Alpine mountain stands next to the totally eclipsed Moon. In spite of -22 degree C temperatures, the ...

Zobacz pełny opis

zdjęcie Orion over the Austrian Alps

Orion over the Austrian Alps

Do you recognize this constellation? Through the icicles and past the mountains is Orion, one of the most identifiable star groupings on the sky and an icon familiar to humanity for over 30,000 years. Orion has looked pretty much the same during ...

Zobacz pełny opis