M33: The Triangulum Galaxy
The small, northern constellation Triangulum harbors this magnificent face-on spiral galaxy, M33. Its popular names include the Pinwheel […]
Science
NGC 1333: Stellar Nursery in Perseus
NGC 1333 is seen in visible light as a reflection nebula, dominated by bluish hues characteristic of starlight […]
Video of a Green Flash
Many think it is just a myth. Others think it is true but its cause isn’t known. Adventurers […]
All of These Space Images are Fake Except One
Why would you want to fake a universe? For one reason — to better understand our real universe. […]
A Filament Leaps from the Sun
Why, sometimes, does part of the Sun’s atmosphere leap into space? The reason lies in changing magnetic fields […]
The Cats Eye Nebula in Optical and X-ray
To some it looks like a cat’s eye. To others, perhaps like a giant cosmic conch shell. It […]
Star System With Right-Angled Planets Surprises Astronomers by Jonathan O’Callaghan
Two planets orbit the poles while another revolves around the star’s equator, suggesting a mysterious, undetected force. Published: […]
The Galaxy Between Two Friends
On an August night two friends enjoyed this view after a day’s hike on the Plateau d’Emparis in […]
The Dark Seahorse in Cepheus
Light-years across, this suggestive shape known as the Seahorse Nebula appears in silhouette against a rich, luminous background […]
NGC 147 and NGC 185
Dwarf galaxies NGC 147 (left) and NGC 185 stand side by side in this sharp telescopic portrait. The […]