Observing | Page 10 of 75 | Astronomy.com

At a distance of 12 million light-years and around 105,000 light-years across, NGC 253’s angular length is close to the diameter of the Full Moon.

Deep-Sky Objects

Observe the galaxies of Sculptor

First Quarter Moon in October 2024

The Sky This Week from October 4 to 11: Enjoy a First Quarter Moon

The blue reflection nebula M78 lies about 1,600 light-years away in Orion. It is a cloud of interstellar gas and dust that owes its luminosity to embedded, bright, blue, early B-type stars — making it the brightest diffuse reflection nebula in the Orion B molecular cloud complex.

Deep-Sky Objects

Deep-sky objects to target as a novice observer

Mars Rising, December 8, 2007

October 2024: What’s in the sky this month?

The Sun, Upcoming Events

An annular solar eclipse: This Week in Astronomy with Dave Eicher

Moai statues on Easter Island

The Moon, The Sun, Upcoming Events

Get set for an eclipse on Easter Island

Annular eclipse

The Sky This Week from September 27 to October 4: South America sees an annular eclipse

Comet Tsuchinshan-ATLAS

Comet Tsuchinshan-ATLAS: The comet of the year is here

Observing, The Sun, Upcoming Events

The Moon meets Venus: This Week in Astronomy with Dave Eicher

The Moon occults M45

The Moon, Upcoming Events

Watch the Moon cover the Pleiades Sunday morning

Neptune as imaged by Voyager

The Sky This Week from September 20 to 27: Neptune at Opposition

Albireo (Beta [β] Cygni) is a classic example of a double star with contrasting colors.

Observing, Stars

What gives stars their colors?