(https://reddit.com/r/EarthPorn/comments/xrcbtz/aurora_milky_way_and_airglow_over_denmark/)
Category: Space
Categories
Artemis
Source (https://reddit.com/r/space/comments/x0d1ci/a_few_pics_of_nasas_artemis_rocket_scheduled_to/)
Originally scheduled to launch today but just delayed a few minutes ago.
Categories
James Webb Telescope
“This slice of the vast universe is approximately the size of a grain of sand held at arm’s length by someone on the ground.”
“The combined mass of this galaxy cluster acts as a gravitational lens, magnifying more distant galaxies, including some seen when the universe was less than a billion years old.”
“This image shows the galaxy cluster SMACS 0723 as it appeared 4.6 billion years ago, with many more galaxies in front of and behind the cluster.”
Source (https://webbtelescope.org/contents/news-releases/2022/news-2022-038)
Taken Sunday 15 May 2022 in the Catskills.
“This image is a 2 shot blend. One for the overall shot, and one for the details in the Moon. Taken back to back, no crazy compositing here, think of it like an HDR! Nikon Z6 + Z 50 1.8 S. Both shots ISO 800, f/2.8. Moon shot 0.8 seconds, overall shot 20 seconds.”
Source (https://reddit.com/r/interestingasfuck/comments/uqwno6/_/i8tkl0i)
Photographer (https://www.instagram.com/danieljstein/)
“Eta Carinae … is a stellar system containing at least two stars with a combined luminosity greater than five million times that of the Sun…”
“…it brightened in 1837… marking the start of its so-called “Great Eruption”.
“It became the second-brightest star in the sky between 11 and 14 March 1843 before fading well below naked eye visibility after 1856.
“… a smaller eruption … in 1892 before fading again. It has brightened consistently since about 1940…”
(https://en.wikipedia.org/wiki/Eta_Carinae)
“From the Latin homunculus meaning Little Man, the nebula consists of gas which was ejected from Eta Carinae in 1841.”
“Within the Homunculus is a smaller Little Homunculus, and within that a shell of shocked material from stellar winds that has been called Baby Homunculus.”
(https://en.wikipedia.org/wiki/Homunculus_Nebula)
“Researchers observed bright flares of X-ray emissions, produced as gas falls into a supermassive black hole. The flares echoed off of the gas falling into the black hole, and as the flares were subsiding, short flashes of X-rays were seen – corresponding to the reflection of the flares from the far side of the disk, bent around the black hole by its strong gravitational field.”
“The strange discovery, detailed in a paper published July 28 in Nature, is the first direct observation of light from behind a black hole – a scenario that was predicted by Einstein’s theory of general relativity but never confirmed, until now.”
(https://news.stanford.edu/press-releases/2021/07/28/first-detection-ehind-black-hole/)
Categories
The Solar System scale
Categories
Valles Marineris, Mars
“Named Valles Marineris, the grand valley extends over 3,000 kilometers long, spans as much as 600 kilometers across, and delves as much as 8 kilometers deep.
By comparison, the Earth’s Grand Canyon in Arizona, USA is 800 kilometers long, 30 kilometers across, and 1.8 kilometers deep.”
Source (https://www.nasa.gov/multimedia/imagegallery/image_feature_83.html)
Via (https://reddit.com/r/spaceporn/comments/k0mkoy/_/gdjgqw9)
“The scientists completed a full sweep of the sky over the course of about six months, looking for sources of X-ray radiation — a type of high-energy electromagnetic radiation. These X-ray sources include black holes, galaxy clusters and leftover remnants from supernova explosions.”
(https://www.space.com/amazing-x-ray-map-universe-erosita-results.html)
danelabonte 