BlogHide Resteemsiotman (59)inΒ scienceΒ β’Β 20 hours agoπ SpacePicture of a Day: The Local Fluff πͺThe stars are not alone. In the disk of our Milky Way Galaxy, about 10 percent of visible matter is in the form of gas called the interstellar medium (ISM). The ISM is not uniform and showsβ¦iotman (59)inΒ scienceΒ β’Β 2 days agoπ SpacePicture of a Day: A Year in Sunsets πͺA year in sunsets, from April 2023 to March 2024, track along the western horizon in these stacked panoramic views. The well-planned sequence is constructed of images recorded near the 21st day ofβ¦iotman (59)inΒ scienceΒ β’Β 3 days agoπ SpacePicture of a Day: The Long Night Moon πͺOn the night of December 15, the Full Moon was bright. Known to some as the Cold Moon or the Long Night Moon, it was the closest Full Moon to the northern winter solstice and the last Full Moon ofβ¦iotman (59)inΒ scienceΒ β’Β 4 days agoπ SpacePicture of a Day: Messier 2 πͺAfter the Crab Nebula, this giant star cluster is the second entry in 18th century astronomer Charles Messier's famous list of things that are not comets. M2 is one of the largest globular starβ¦iotman (59)inΒ scienceΒ β’Β 5 days agoπ SpacePicture of a Day: NGC 660: Polar Ring Galaxy πͺWhat kind of strange galaxy is this? This rare structure is known as a polar ring galaxy, and it seems to have two different rings of stars. In this galaxy, NGC 660, one ring of bright stars, gasβ¦iotman (59)inΒ scienceΒ β’Β 6 days agoπ SpacePicture of a Day: Near to the Heart Nebula πͺWhat excites the Heart Nebula? First, the large emission nebula on the upper left, catalogued as IC 1805, looks somewhat like a human heart. The nebula glows brightly in red light emitted by itsβ¦iotman (59)inΒ scienceΒ β’Β 7 days agoπ SpacePicture of a Day: A Kilometer High Cliff on Comet Churyumov - Gerasimenko πͺThis kilometer high cliff occurs on the surface of a comet. It was discovered on the dark nucleus of Comet Churyumov - Gerasimenko (CG) by Rosetta, a robotic spacecraft launched by ESA, whichβ¦iotman (59)inΒ scienceΒ β’Β 8 days agoπ SpacePicture of a Day: Geminid Meteors over a Snowy Forest πͺMeteors have been flowing out from the constellation Gemini. This was expected, as mid-December is the time of the Geminid Meteor Shower. Pictured here, over two dozen meteors were caught inβ¦iotman (59)inΒ scienceΒ β’Β 9 days agoπ SpacePicture of a Day: Apollo 17's Moonship πͺAwkward and angular looking, Apollo 17's lunar module Challenger was designed for flight in the near vacuum of space. Digitally enhanced and reprocessed, this picture taken from Apollo 17's commandβ¦iotman (59)inΒ scienceΒ β’Β 10 days agoπ SpacePicture of a Day: M51: Tidal Streams and H-alpha Cliffs πͺAn intriguing pair of interacting galaxies, M51 is the 51st entry in Charles Messier's famous catalog. Perhaps the original spiral nebula, the large galaxy with whirlpool-like spiral structure seenβ¦iotman (59)inΒ scienceΒ β’Β 11 days agoπ SpacePicture of a Day: Phaethon's Brood πͺBased on its well-measured orbit, 3200 Phaethon (sounds like FAY-eh-thon) is recognized as the source of the meteoroid stream responsible for the annual Geminid meteor shower. Even though mostβ¦iotman (59)inΒ scienceΒ β’Β 12 days agoπ SpacePicture of a Day: The Shells and Jets of Galaxy Centaurus A πͺWhat's the closest active galaxy to planet Earth? That would be Centaurus A, cataloged as NGC 5128, which is only 12 million light-years distant. Forged in a collision of two otherwise normalβ¦iotman (59)inΒ scienceΒ β’Β 13 days agoπ SpacePicture of a Day: The Great Meteor Storm of 1833 πͺIt was a night of 100,000 meteors. The Great Meteor Storm of 1833 was perhaps the most impressive meteor event in recent history. Best visible over eastern North America during the pre-dawn hoursβ¦iotman (59)inΒ scienceΒ β’Β 14 days agoπ SpacePicture of a Day: Pleiades: The Seven Sisters Star Cluster πͺHave you ever seen the Pleiades star cluster? Even if you have, you probably have never seen it as large and clear as this. Perhaps the most famous star cluster on the sky, the bright stars of theβ¦iotman (59)inΒ scienceΒ β’Β 15 days agoπ SpacePicture of a Day: Aurora around Saturn's North Pole πͺAre Saturn's auroras like Earth's? To help answer this question, the Hubble Space Telescope and the Cassini spacecraft monitored Saturn's North Pole simultaneously during Cassini's final orbitsβ¦iotman (59)inΒ scienceΒ β’Β 16 days agoπ SpacePicture of a Day: Rocket Engine Fireplace πͺYou might not think a close up view of rocket engines producing 8.8 million pounds of thrust would be relaxing, but here it can be. In fact, you can get a warm and cozy feeling just spending a fewβ¦iotman (59)inΒ scienceΒ β’Β 17 days agoπ SpacePicture of a Day: Xuyi Station and the Fireball πͺColorful and bright, this streaking fireball meteor was captured in a single exposure taken at Purple Mountain (Tsuchinshan) Observatoryβs Xuyi Station in 2020, during planet Earth's annual Perseidβ¦iotman (59)inΒ scienceΒ β’Β 20 days agoπ SpacePicture of a Day: Ice Clouds over a Red Planet πͺIf you could stand on Mars -- what might you see? You might look out over a vast orange landscape covered with rocks under a dusty orange sky, with a blue-tinted Sun over the horizon, andβ¦iotman (59)inΒ scienceΒ β’Β 21 days agoπ SpacePicture of a Day: NGC 300: A Galaxy of Stars πͺThis galaxy is unusual for how many stars it seems that you can see. Stars are so abundantly evident in this deep exposure of the spiral galaxy NGC 300 because so many of these stars are bright blueβ¦iotman (59)inΒ scienceΒ β’Β 22 days agoπ SpacePicture of a Day: Cosmic Latte: The Average Color of the Universe πͺWhat color is the universe? More precisely, if the entire sky were smeared out, what color would the final mix be? This whimsical question came up when trying to determine what stars areβ¦
