Size comparison between Sun and Betelgeuse which has a radius of approximately 887 Suns. If you swapped out the sun and replaced it with Betelgeuse, the red star would swallow Mercury, Venus, Earth, Mars and the asteroid belt.
/r/spaceFalcon 9 Slow Motion
/r/spaceHow I captured the Rosette Nebula last night.
/r/spaceThe best explanation of the Big Bang (and reality) you’ll ever hear
/r/spaceEarth's Rotation Visualized in a Timelapse of the Milky Way Galaxy - 4K
/r/spaceVenus Rover Concepts That Beat The Killer Atmosphere
/r/spaceMoon Phases 2020
/r/spaceEurope's Spaceport in French Guiana
/r/spaceGuy Collins' "VOYAGER" - An Andrew Haughton ReScore
/r/spaceOrbital Machines - Danish company building an Electric Turbopump for suborbital flights
/r/spaceImages taken by New Horizons spacecraft as it approached Pluto in 2015
/r/spaceHow I captured Venus last night.
/r/spaceStorytime from Space! "I, Humanity"... Astronauts on the ISS read kids books in zero gravity.
/r/spaceThis is the Highest Resolution Image Ever Taken of the Sun
/r/spaceA Universe Made from Numbers — Exploring the Cosmos from the Largest galaxy to the Tiniest Atom
/r/spacePleiades through my Telescope with ISO 203000
/r/spaceFeb 18, 2020 time lapse of the Lunar occultation of Mars
/r/space[OC] I have made 60 fps 4k version of Apollo 16 Lunar Rover "Grand Prix" (1972 April 21, Moon) with several neural networks support
/r/spaceArianespace Vol VA252 Ariane V JCSAT-17 et GEO-KOMPSAT-2B (FR) coming in 3 hours 4:35 EST
/r/spaceThe search for Earth-like planets in Alpha Centauri just started
/r/spaceOn Friday, April 13, 2029, the giant asteroid Apophis will pass uncomfortably close to Earth (within about 23k miles, or 10 times closer than the Moon). Though won't hit us, it will be close enough that about 2 billion people (mainly Africa and Europe) will be able to see it with their naked eyes.
/r/spaceFirst rocket launch but not my last! The energy was unreal and the excitement in the air was palpable! Cygnus NG-13 launch on February 15, 2020 from Wallops Flight Facility.
/r/spaceFairing deploy from space X
/r/spaceHow I captured the the Monkey Head and Fruit Nebula
/r/spaceMethuselah: The Oldest Star in The Known Universe.
/r/spaceJocelyn Bell Burnell, who discovered the first pulsars, visited my office last week to talk about my science!!! I then gifted her an embroidered pulsar plot profile of the first pulsar she discovered. She loved it!
/r/spaceI took a picture of the full disc of our sun about 30 minutes ago. We are in the midst of a period of reduced solar activity, but it is still incredibly dynamic. [OC]
/r/spaceA cosmic rose for you ... this interacting galaxy pair is 300 million light years distant. I used an amateur telescope to collect light from deep space for 10 hours to create this portrait. [OC]
/r/spaceMy first Horsehead Nebula from my front yard, I used a 16 hour exposure to capture this faint object.