BlogHide Resteemsiotman (59)inΒ scienceΒ β’Β 9 hours agoπ SpacePicture of a Day: The North America Nebula πͺThe North America nebula on the sky can do what the North America continent on Earth cannot -- form stars. Specifically, in analogy to the Earth-confined continent, the bright part that appears asβ¦iotman (59)inΒ scienceΒ β’Β yesterdayπ SpacePicture of a Day: Comet ATLAS over BrasΓlia πͺWhat's that in the sky? Above the city, above most clouds, far in the distance: it's a comet. Pictured, the impressive tail of Comet C/2024 G3 (ATLAS) was imaged from BrasΓlia, Brazil four days ago.β¦iotman (59)inΒ scienceΒ β’Β 14 days agoπ SpacePicture of a Day: Supernova Remnants Big and Small πͺWhat happens after a star explodes? A huge fireball of hot gas shoots out in all directions. When this gas slams into the existing interstellar medium, it heats up so much it glows. Two differentβ¦iotman (59)inΒ scienceΒ β’Β 15 days agoπ SpacePicture of a Day: A New Year's Aurora and SAR Arc πͺIt was a new year, and the sky was doubly red. The new year meant that the Earth had returned to its usual place in its orbit on January 1, a place a few days before its closest approach to theβ¦iotman (59)inΒ scienceΒ β’Β 16 days agoπ SpacePicture of a Day: Colliding Spiral Galaxies from Webb and Hubble πͺBillions of years from now, only one of these two galaxies will remain. Until then, spiral galaxies NGC 2207 and IC 2163 will slowly pull each other apart, creating tides of matter, sheets ofβ¦iotman (59)inΒ scienceΒ β’Β 18 days agoπ SpacePicture of a Day: Welcome to Perihelion πͺrth's orbit around the Sun is not a circle, it's an ellipse. The point along its elliptical orbit where our fair planet is closest to the Sun is called perihelion. This year perihelion is todayβ¦iotman (59)inΒ scienceΒ β’Β 19 days agoπ SpacePicture of a Day: Eclipse Pair πͺclipses tend to come in pairs. Twice a year, during an eclipse season that lasts about 34 days, Sun, Moon, and Earth can nearly align. Then the full and new phases of the Moon, separated by justβ¦iotman (59)inΒ scienceΒ β’Β 20 days agoπ SpacePicture of a Day: Solar Analemma 2024 πͺRecorded during 2024, this year-spanning series of images reveals a pattern in the seasonal drift of the Sun's daily motion through planet Earth's sky. Known to some as an analemma, the figure-eightβ¦iotman (59)inΒ scienceΒ β’Β 21 days agoπ SpacePicture of a Day: Alpha Centauri: The Closest Star System πͺThe closest star system to the Sun is the Alpha Centauri system. Of the three stars in the system, the dimmest -- called Proxima Centauri -- is actually the nearest star. The bright stars Alphaβ¦iotman (59)inΒ scienceΒ β’Β 22 days agoπ SpacePicture of a Day: The Twisted Disk of NGC 4753 πͺWhat do you think this is? Hereβs a clue: it's bigger than a bread box. Much bigger. The answer is that pictured NGC 4753 is a twisted disk galaxy, where unusual dark dust filaments provide cluesβ¦iotman (59)inΒ scienceΒ β’Β 23 days agoπ SpacePicture of a Day: M27: The Dumbbell Nebula πͺIs this what will become of our Sun? Quite possibly. The first hint of our Sun's future was discovered inadvertently in 1764. At that time, Charles Messier was compiling a list of diffuse objectsβ¦iotman (59)inΒ scienceΒ β’Β 24 days agoπ SpacePicture of a Day: Methane Bubbles Frozen in Lake Baikal πͺWhat are these bubbles frozen into Lake Baikal? Methane. Lake Baikal, a UNESCO World Heritage Site in Russia, is the world's largest (by volume), oldest, and deepest lake, containing over 20% ofβ¦iotman (59)inΒ scienceΒ β’Β 25 days agoπ SpacePicture of a Day: A December Winter Night πͺOrion seems to come up sideways, climbing over a distant mountain range in this deep skyscape. The wintry scene was captured from southern Poland on the northern hemisphere's long solstice night.β¦iotman (59)inΒ scienceΒ β’Β 26 days agoπ SpacePicture of a Day: Planet Earth at Twilight πͺNo sudden, sharp boundary marks the passage of day into night in this gorgeous view of ocean and clouds over our fair planet Earth. Instead, the shadow line or terminator is diffuse and shows theβ¦iotman (59)inΒ scienceΒ β’Β 27 days agoπ SpacePicture of a Day: Grand Spiral NGC 5643 πͺViewed face-on, grand spiral galaxy NGC 5643 has a festive appearance in this colorful cosmic portrait. Some 55 million light-years distant, the galaxy extends for over 100,000 light-years, seenβ¦iotman (59)inΒ scienceΒ β’Β 28 days agoπ SpacePicture of a Day: Diamond Dust Sky Eye πͺWhy is there a huge eye in the sky? Diamond dust. That is an informal term for small ice crystals that form in the air and flitter to the ground. Because these crystals are geometrically shapedβ¦iotman (59)inΒ scienceΒ β’Β 29 days agoπ SpacePicture of a Day: Fox Fur, Cone, and Christmas Tree πͺWhat do the following things have in common: a cone, the fur of a fox, and a Christmas tree? Answer: they all occur in the constellation of the Unicorn (Monoceros). Considered as a star formingβ¦iotman (59)inΒ scienceΒ β’Β last monthπ SpacePicture of a Day: Christmas Tree Aurora πͺIt was December and the sky lit up like a Christmas tree. Shimmering, the vivid green, blue, and purple auroral colors that formed the tree-like apparition were caused by high atmospheric oxygen andβ¦iotman (59)inΒ scienceΒ β’Β last monthπ 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 last monthπ 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¦
