Astronomy Picture of the Day: Launch of the Parker Solar Probe

When is the best time to launch a probe to the Sun?

Astronomy Picture of the Day: M86 in the Central Virgo Cluster

Is there a bridge of gas connecting these two great galaxies? Quite possibly, but it is hard to be sure.

Astronomy Picture of the Day: The Pencil Nebula in Red and Blue

This shock wave plows through interstellar space at over 500,000 kilometers per hour.

Astronomy Picture of the Day: Meteor before Galaxy

What's that green streak in front of the Andromeda galaxy? A meteor.

Astronomy Picture of the Day: Moon, Mars, and Milky Way

Just two weeks ago, dark skies over the desert in northern Iran held this alluring celestial vista.

Astronomy Picture of the Day: Spiral Galaxy NGC 6744

Beautiful spiral galaxy NGC 6744 is nearly 175,000 light-years across, larger than our own Milky Way.

Astronomy Picture of the Day: Red Planet, Red Moon, and Mars

Mars is also known as The Red Planet, often seen with a reddish tinge in dark night skies.

Astronomy Picture of the Day: Neutrino Associated with Distant Blazar Jet

With equipment frozen deep into ice beneath Earth's South Pole, humanity appears to have discovered a neutrino from far across the universe.

Astronomy Picture of the Day: Rings Around the Ring Nebula

There is much more to the familiar Ring Nebula (M57), however, than can be seen through a small telescope.

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