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AllanICarswellObservatoryHappy Space Science Saturday! Did you know that today Saturn begins its retrograde motion? Normally, Saturn moves eastward against the background of stars, but during retrograde it appears to pivot and move westward through the constellations. This apparent backward motion isn’t because Saturn actually reverses its orbit, but rather because of Earth’s own motion around the Sun. As Earth passes Saturn in its orbit, our changing perspective makes Saturn appear to move backward in the night sky. <a href="https://pixelfed.social/discover/tags/Orbit?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Orbit</a> <a href="https://pixelfed.social/discover/tags/Retrograde?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Retrograde</a> <a href="https://pixelfed.social/discover/tags/Saturn?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Saturn</a> <a href="https://pixelfed.social/discover/tags/SpaceExploration?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#SpaceExploration</a> <a href="https://pixelfed.social/discover/tags/Space?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Space</a> <a href="https://pixelfed.social/discover/tags/Astronomer?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Astronomer</a> <a href="https://pixelfed.social/discover/tags/Astronomy?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Astronomy</a> <a href="https://pixelfed.social/discover/tags/SpaceScienceSaturday?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#SpaceScienceSaturday</a> <a href="https://pixelfed.social/discover/tags/YorkU?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#YorkU</a> <a href="https://pixelfed.social/discover/tags/Observatory?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Observatory</a> <a href="https://pixelfed.social/discover/tags/AllanICarswellObservatory?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#AllanICarswellObservatory</a> <a href="https://pixelfed.social/discover/tags/Stargazing?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Stargazing</a> <a href="https://pixelfed.social/discover/tags/YorkUniverse?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#YorkUniverse</a> <a href="https://pixelfed.social/discover/tags/Telescope?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Telescope</a> <a href="https://pixelfed.social/discover/tags/Planets?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Planets</a> <a href="https://pixelfed.social/discover/tags/Stars?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Stars</a> <a href="https://pixelfed.social/discover/tags/Science?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Science</a> <a href="https://pixelfed.social/discover/tags/Physics?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Physics</a> <a href="https://pixelfed.social/discover/tags/Toronto?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Toronto</a> <a href="https://pixelfed.social/discover/tags/YorkUObservatory?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#YorkUObservatory</a> <a href="https://pixelfed.social/discover/tags/AICO?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#AICO</a> <a href="https://pixelfed.social/discover/tags/Cosmos?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#Cosmos</a> <a href="https://pixelfed.social/discover/tags/LearnAstronomy?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#LearnAstronomy</a> <a href="https://pixelfed.social/discover/tags/SpaceFacts?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#SpaceFacts</a>

M F ∆ W :verified:Arp 220 is an ultra-luminous infrared <a href="https://mindly.social/tags/galaxy" class="mention hashtag" rel="nofollow noopener" target="_blank">#galaxy</a> (ULIRG) that emits 300 times more light than the <a href="https://mindly.social/tags/MilkyWay" class="mention hashtag" rel="nofollow noopener" target="_blank">#MilkyWay</a>. It also happens to glow brightest in infrared light, Webb's specialty. Source: <a href="https://mindly.social/tags/NASA" class="mention hashtag" rel="nofollow noopener" target="_blank">#NASA</a> <a href="https://mindly.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#astronomy</a> <a href="https://mindly.social/tags/astronomypictures" class="mention hashtag" rel="nofollow noopener" target="_blank">#astronomypictures</a> <a href="https://mindly.social/tags/astronomypictureoftheday" class="mention hashtag" rel="nofollow noopener" target="_blank">#astronomypictureoftheday</a> <a href="https://mindly.social/tags/astronomyisfun" class="mention hashtag" rel="nofollow noopener" target="_blank">#astronomyisfun</a> <a href="https://mindly.social/tags/astronomyresearch" class="mention hashtag" rel="nofollow noopener" target="_blank">#astronomyresearch</a> <a href="https://mindly.social/tags/astronomyfact" class="mention hashtag" rel="nofollow noopener" target="_blank">#astronomyfact</a> <a href="https://mindly.social/tags/exploreastronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#exploreastronomy</a> <a href="https://mindly.social/tags/universe" class="mention hashtag" rel="nofollow noopener" target="_blank">#universe</a> <a href="https://mindly.social/tags/ouruniverse" class="mention hashtag" rel="nofollow noopener" target="_blank">#ouruniverse</a> <a href="https://mindly.social/tags/learnastronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#learnastronomy</a> <a href="https://mindly.social/tags/astronomyatmastodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#astronomyatmastodon</a> <a href="https://mindly.social/tags/universeexploration" class="mention hashtag" rel="nofollow noopener" target="_blank">#universeexploration</a> <a href="https://mindly.social/tags/JWST" class="mention hashtag" rel="nofollow noopener" target="_blank">#JWST</a> <a href="https://mindly.social/tags/followformore" class="mention hashtag" rel="nofollow noopener" target="_blank">#followformore</a>

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