Astronomy Perplex

UGC 1810: Wildly Interacting Galaxy from Hubble What’s happening to this spiral galaxy? Although details remain uncertain, it surely has to do with an ongoing battle with its smaller galactic neighbor The featured galaxy is labelled UGC 1810 by itself, but together with its collisional partner is known as Arp 273 The overall shape of the UGC 1810 — in particular its blue outer ring — is likely a result of wild and violent gravitational interactions This ring’s blue color is caused by massive stars that are blue hot and have formed only in the past few million years
The inner galaxy appears older, redder, and threaded with cool filamentary dust A few bright stars appear well in the foreground, unrelated to UGC 1810, while several galaxies are visible well in the background Arp 273 lies about 300 million light years away toward the constellation of Andromeda Quite likely, UGC 1810 will devour its galactic sidekick over the next billion years and settle into a classic spiral form
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Image Credit: NASA, ESA, Hubble, HLA; Processing & Copyright: Domingo Pestana
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The top image was taken by NASA’s Hubble Space Telescope and the bottom one was taken by the European Space Agency’s Herschel Space Observatory It’s of the universe clear back, close to its beginning The Herschel looked in far infrared wavelengths at a bare (to us) part of the universe called the Lockman Hole Every single one of those nearly invisible dots is a galaxy The red ones are the most distant 🌌
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This blackhole is in one of the densest galaxies known to date! The M60-UCD1 crams 140 million stars and has a diameter of around 300 light years
If you lived inside it, the night sky would dazzle with at least 1 million stars visible to the naked eye
Tag friends who’d love to see this 🔭
Credit: @nasa @europeanspaceagency
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3D computer artwork, viewed at an altitude of 39 kilometres In the foreground is Kanchenjunga, which, at 8586 metres high, is the third tallest in the world In the background is Mount Everest, the world’s tallest mountain at 8844 metres high To the left the green regions of lower Nepal and northern India and to the right the high plains of Tibet This image was created by Christoph Hormann using data obtained from satellites such as Landsat and SRTM (Shuttle Radar Topography Mission) The data was processed into computer models using three-dimensional rendering software and then coloured and distorted to mimic the natural curvature of the Earth ⛰ 🌍
Image credit: Christoph Hormann
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This image, captured by the SPHERE instrument on ESO’s Very Large Telescope, shows the star TYC 8998-760-1 accompanied by two giant exoplanets, TYC 8998-760-1b and TYC 8998-760-1c This is the first time astronomers have directly observed more than one planet orbiting a star similar to the Sun
The two planets are visible as two bright dots in the centre (TYC 8998-760-1b) and bottom right (TYC 8998-760-1c) of the frame Other bright dots, which are background stars, are visible in the image as well By taking different images at different times, the team were able to distinguish these planets from the background stars
The image was captured by blocking the light from the young, Sun-like star (top-left of centre) using a coronagraph, which allows for the fainter planets to be detected The bright and dark rings we see on the star’s image are optical artefacts
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Credit:
ESO/Bohn et al
Via: @universeviewz
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this is really wonderful🥰What do you think about this?
Celestial bodies provide the basic standards for determining the periods of a calendar Their movement as they rise and set is now known to be a reflection of the Earth’s rotation, which, although not precisely uniform, can conveniently be averaged out to provide a suitable calendar day
The day can be measured either by the stars or by the Sun If the stars are used, then the interval is called the sidereal day and is defined by the period between two passages of a star across the meridian: it is 23 hours 56 minutes 4 10 seconds of mean solar time
The interval between two passages of the Sun across the meridian is a solar day In practice, since the rate of the Sun’s motion varies with the seasons, use is made of a fictitious Sun that always moves across the sky at an even rate Solar Day has a duration of 24 hours 3 minutes 56 55 seconds It is longer than the sidereal day because the motion of the Earth in its orbit during the period between two transits of the Sun means that the Earth must complete more than a whole revolution to bring the Sun back to the meridian The mean solar day is the period used in calendar computation
The month is determined by the Moon’s passage around the Earth, and, as in the case of the day, there are several ways in which it can be defined In essence, these are of two kinds: first, the period taken by the Moon to complete an orbit of the Earth and, second, the time taken by the Moon to complete a cycle of phases
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Magical imagination!
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Via @felix_saves and @lars_pohlmann
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Full Beaver Moon (99 3%) in HDR
“The wind was rough that night so seeing was not ideal, but with enough frames to stack and sort, I was able to save only the best to improve the final stack This image is a stack of the best 15% of 6,000 frames of the properly exposed Moon in mono RGB along with one overexposed frame for glow ”

The Eagle Nebula! This is the Eagle Nebula, it’s approximately 7,000 light years from Earth, meaning you are looking 7,000 years in the past in this image The name the “Eagle Nebula” came from the fact that it’s shaped like an Eagle The Nebula is regarded as one of the most beautiful Nebulae known!
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Credits: first image by NASA, second by NOIRLab, third by Nicolas Paladini, full image credits to him Dm for credit/removal
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Neutron stars are formed when a massive star runs out of fuel and collapses The very central region of the star – the core – collapses, crushing together every proton and electron into a neutron
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