Login with Patreon to Remove Ads

Earthrise: A Video Reconstruction

Copyright: About 12 seconds into this video, something unusual happens. The Earth begins to rise. Never seen by humans before, the rise of the Earth over the limb of the Moon occurred about 55.5 years ago and surprised and amazed the crew of Apollo 8. The crew immediately scrambled to take still images of the […]

A Solstice Moon

Copyright: Tunc Tezel Rising opposite the setting Sun, June’s Full Moon occurred within about 28 hours of the solstice. The Moon stays close to the Sun’s path along the ecliptic plane and so while the solstice Sun climbed high in daytime skies, June’s Full Moon remained low that night as seen from northern latitudes. In […]

Comet 13P/Olbers

Copyright: Dan Bartlett Not a paradox, Comet 13P/Olbers is returning to the inner Solar System after 68 years. The periodic, Halley-type comet will reach its next perihelion or closest approach to the Sun on June 30 and has become a target for binocular viewing low in planet Earth’s northern hemisphere night skies. But this sharp […]

Protostellar Outflows in Serpens

Copyright: Jets of material blasting from newborn stars, are captured in this James Webb Space Telescope close-up of the Serpens Nebula. The powerful protostellar outflows are bipolar, twin jets spewing in opposite directions. Their directions are perpendicular to accretion disks formed around the spinning, collapsing stellar infants. In the NIRcam image, the reddish color represents […]

Timelapse: Aurora, SAR, and the Milky Way

Copyright: Jeff Dai (TWAN); Music (License): Suite bergamasque by Claude Debussy What’s happening in the sky this unusual night? Most striking in the featured 4.5-hour 360-degree panoramic video, perhaps, is the pink and purple aurora. That’s because this night, encompassing May 11, was famous for its auroral skies around the world. As the night progresses, […]

The Dark Doodad Nebula

Copyright: Martin Pugh & Rocco Sung What is that strange brown ribbon on the sky? When observing the star cluster NGC 4372, observers frequently take note of an unusual dark streak nearby running about three degrees in length. The streak, actually a long molecular cloud, has become known as the Dark Doodad Nebula. (Doodad is […]

JADES-GS-z14-0: A New Farthest Object

Copyright: What if we could see back to the beginning of the universe? We could see galaxies forming. But what did galaxies look like back then? These questions took a step forward recently with the release of the analysis of a James Webb Space Telescope (JWST) image that included the most distant object yet discovered. […]

The Colors of Saturn from Cassini

Copyright: What creates Saturn’s colors? The featured picture of Saturn only slightly exaggerates what a human would see if hovering close to the giant ringed world. The image was taken in 2005 by the robot Cassini spacecraft that orbited Saturn from 2004 to 2017. Here Saturn’s majestic rings appear directly only as a curved line, […]

Lynds Dark Nebula 1251

Copyright: Long Xin Stars are forming in Lynds Dark Nebula (LDN) 1251. About 1,000 light-years away and drifting above the plane of our Milky Way galaxy, LDN 1251 is also less appetizingly known as “The Rotten Fish Nebula.” The dusty molecular cloud is part of a complex of dark nebulae mapped toward the Cepheus flare […]

Hubble’s NGC 1546

Copyright: Returning to science operations on June 14, the Hubble Space Telescope used its new pointing mode to capture this sharp image of spiral galaxy NGC 1546. A member of the Dorado galaxy group, the island universe lies a mere 50 million light-years away. The galactic disk of NGC 1546 is tilted to our line-of-sight, […]

Sandy and the Moon Halo

Copyright: Marcella Giulia Pace Last April’s Full Moon shines through high clouds near the horizon, casting shadows in this garden-at-night skyscape. Along with canine sentinel Sandy watching the garden gate, the wide-angle snapshot also captured the bright Moon’s 22 degree ice halo. But June’s bright Full Moon will cast shadows too. This month, the Moon’s […]

NGC 6188: Dragons of Ara

Copyright: Carlos Taylor Do dragons fight on the altar of the sky? Although it might appear that way, these dragons are illusions made of thin gas and dust. The emission nebula NGC 6188, home to the glowing clouds, is found about 4,000 light years away near the edge of a large molecular cloud, unseen at […]

Gigantic Jets over Himalayan Mountains

Copyright: Li Xuanhua Yes, but can your thunderstorm do this? Pictured here are gigantic jets shooting up from a thunderstorm last week toward the Himalayan Mountains in China and Bhutan. The composite image captured four long jets that occurred only minutes apart. Gigantic jets, documented only in this century, are a type of lightning discharge […]

Ou4: The Giant Squid Nebula

Copyright: Alex Linde Squids on Earth aren’t this big. This mysterious squid-like cosmic cloud spans nearly three full moons on planet Earth’s sky. Discovered in 2011 by French astro-imager Nicolas Outters, the Squid Nebula’s bipolar shape is distinguished here by the telltale blue emission from doubly ionized oxygen atoms. Though apparently surrounded by the reddish […]

Animation: Black Hole Destroys Star

Copyright: What happens if a star gets too close to a black hole? The black hole can rip it apart — but how? It’s not the high gravitational attraction itself that’s the problem — it’s the difference in gravitational pull across the star that creates the destruction. In the featured animated video illustrating this disintegration, […]