Arp 107 hosts a special spiraling 'Seyfert' galaxy connected to a smaller galaxy by a 'bridge' of dust and gas.
The famous Harvest Moon — the final supermoon of 2023 — will be the first full moon of autumn when it rises on Sept. 29.
The sun's outer atmosphere was captured at previously impossible extreme ultraviolet wavelengths thanks to a last-minute engineering hack.
A bright, yellowish spot in the morning sky is actually Mercury making a rare daytime appearance. Here's how to see it at its highest and brightest this week.
With the ringed planet currently perfectly positioned for observation with a small telescope, relive Voyager 2's landmark 1981 visit.
Two planet-sized sunspots peer out from behind what will be the world's largest telescope, currently being built on a mountaintop in Chile.
James Webb Space Telescope shows new star clusters forming in one of the best-looking "grand-design" spiral galaxies in the night sky.
The closest, brightest full moon of 2023 is also the second full moon in the same calendar month. Here's how to see it.
The archetypal planetary nebula imaged by the James Webb Space Telescope now comes in two colorful versions, each showing spectacular features.
Imaged beautifully by Hubble, NGC 6684 is a 'lenticular' galaxy very different to our own Milky Way.
This week, the Hubble Space Telescope captured a stunning image of globular cluster NGC 6652 — a collection of some of the oldest stars in the Milky Way galaxy.
On Oct. 14, an epic 'ring of fire' annular solar eclipse will swoop across North America, providing once-in-a-lifetime views for several states. Here’s how to watch, no matter where you are.
The second planet from the sun is approaching 'inferior conjunction' as it swaps from being the 'Evening Star' to the 'Morning Star,' passing between Earth and the sun in the meantime.
As many as 100 'shooting stars' per hour will be visible during the moonless peak of the Perseids on Aug. 12 and 13.
The 'Sturgeon Supermoon' will be the second of four supermoons in 2023 and best viewed at moonrise on Tuesday, August 1, 2023.
As many as 20 'shooting stars' per hour will fall during the peak of the Delta Aquariid meteor shower this weekend, but August's Perseid meteor shower will be far more impressive.
Aphelion marks the point in our planet's orbit of the sun when it's at its maximum distance from our star. So why is it so hot out?
July's full moon will be one of the closest to Earth of the year and one of the lowest-hanging as seen from the Northern Hemisphere.
From the Mediterranean to North America, there's a lot of evidence that the day the 'sun stands still' has been important to humans for thousands of years.
Astronomical summer in the Northern Hemisphere begins with the closest alignments of Mars, Venus and the 'Earth-shining' crescent moon until 2028.
The summer solstice falls on June 20 or 21 every year in the Northern Hemisphere. Here's why this day is the longest day of the year, with the most hours of daylight.
Look North as the stars appear in June and July to have a chance of seeing rare noctilucent (or 'night-shining') clouds with the naked eye.
Here's how to watch the Red Planet swoop across the Beehive Cluster — one of the closest star clusters to Earth — after sunset this week.
June's full moon is known as the Strawberry Moon, the Hot Moon and the Rose Moon. It will be at its fullest on Saturday night, June 3.