iotman (59)in #science • 22 hours ago🌌 SpacePicture of a Day: NGC 6960: The Witch's Broom Nebula 🪐Ten thousand years ago, before the dawn of recorded human history, a new light would suddenly have appeared in the…iotman (59)in #science • 2 days ago🌌 SpacePicture of a Day: Comet Lemmon Brightens 🪐Comet Lemmon is brightening and moving into morning northern skies. Besides Comet SWAN25B and Comet ATLAS, Comet…iotman (59)in #science • 3 days ago🌌 SpacePicture of a Day: Two Camera Comets in One Sky 🪐It may look like these comets are racing, but they are not. Comets C/2025 K1 ATLAS (left) and C/2025 R2 SWAN (right)…iotman (59)in #science • 4 days ago🌌 SpacePicture of a Day: Leopard Spots on Martian Rocks 🪐What is creating these unusual spots? Light-colored spots on Martian rocks, each surrounded by a dark border, were…iotman (59)in #science • 5 days ago🌌 SpacePicture of a Day: A Rocket in the Sun 🪐On the morning of September 24 a rocket crosses the bright solar disk in this long range telescopic snapshot captured…iotman (59)in #science • 6 days ago🌌 SpacePicture of a Day: A SWAN, an ATLAS, and Mars 🪐A new visitor to the inner Solar System, comet C/2025 R2 (SWAN) sports a long ion tail extending diagonally across…iotman (59)in #science • 7 days ago🌌 SpacePicture of a Day: Saturn Opposite the Sun 🪐This year Saturn was at opposition on September 21, opposite the Sun in planet Earth's sky. At its closest to Earth…iotman (59)in #science • 8 days ago🌌 SpacePicture of a Day: GW250114: Rotating Black Holes Collide 🪐It was the strongest gravitational wave signal yet measured -- what did it show? GW250114 was detected by both arms…iotman (59)in #science • 9 days ago🌌 SpacePicture of a Day: NGC 6357: Cathedral to Massive Stars 🪐How massive can a normal star be? Estimates made from distance, brightness and standard solar models had given one…iotman (59)in #science • 10 days ago🌌 SpacePicture of a Day: Equinox at Saturn 🪐On Saturn, the rings tell you the season. On Earth, today marks an equinox, the time when the Earth's equator tilts…iotman (59)in #science • 11 days ago🌌 SpacePicture of a Day: Equinox Sunset 🪐Does the Sun set in the same direction every day? No, the direction of sunset depends on the time of the year.…iotman (59)in #science • 12 days ago🌌 SpacePicture of a Day: Gibbous vs Crescent 🪐rly risers around planet Earth have enjoyed a shining crescent Moon near brilliant Venus, close to the eastern horizon…iotman (59)in #science • 13 days ago🌌 SpacePicture of a Day: The NGC 6914 Complex 🪐A study in contrasts, this colorful cosmic skyscape features stars, dust, and glowing gas in the vicinity of NGC 6914.…iotman (59)in #science • 14 days ago🌌 SpacePicture of a Day: Comet C/2025 R2 (SWAN) 🪐A new visitor from the outer Solar System, comet C/2025 R2 (SWAN) also known as SWAN25B was only discovered late last…iotman (59)in #science • 15 days ago🌌 SpacePicture of a Day: Nebulas and Clusters in Sagittarius 🪐Can you spot famous celestial objects in this image? 18th-century astronomer Charles Messier cataloged only two of…iotman (59)in #science • 16 days ago🌌 SpacePicture of a Day: New Comet SWAN25B over Mexico 🪐A newly discovered comet is already visible with binoculars. The comet, C/2025 R2 (SWAN) and nicknamed SWAN25B, is…iotman (59)in #science • 19 days ago🌌 SpacePicture of a Day: Star Trails over One-Mile Radio Telescope 🪐The steerable 60 foot diameter dish antenna of the One-Mile Telescope at Mullard Radio Astronomy Observatory…iotman (59)in #science • 20 days ago🌌 SpacePicture of a Day: Lunar Eclipse in Two Hemispheres 🪐September's total lunar eclipse is tracked across night skies from both the northern and southern hemispheres of…iotman (59)in #science • 21 days ago🌌 SpacePicture of a Day: The Umbra of Earth 🪐The dark, inner shadow of planet Earth is called the umbra. Shaped like a cone extending into space, it has a circular…iotman (59)in #science • 22 days ago🌌 SpacePicture of a Day: The Great Lacerta Nebula 🪐It is one of the largest nebulas on the sky -- why isn't it better known? Roughly the same angular size as the…
