The Bubble Nebula, aka NGC 7635, is an emission nebula located in the constellation Cassiopeia. The "bubble" is created by the stellar wind from a massive hot, young central star. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. Awesome stuff here folks! ................................................................................................................................................... #science #space #bubble #nebula

𝔻𝔸𝕀𝕃𝕐 𝔼𝔸ℝ𝕋ℍ & 𝕊𝕌ℕ ℝ𝔼ℙ𝕆ℝ𝕋 𝟞.𝟙𝟛.𝟚𝟘𝟙𝟠: 𝗦𝗼𝗹𝗮𝗿 𝗪𝗶𝗻𝗱: speed: 305.0 km/sec density: 17.1 protons/cm3 Space weather is relatively calm. Activity increase tomorrow, when the Earth enters a solar wind stream from an earth-facing solar hole. 6:09 https://www.youtube.com/watch?v=ESk2WMJVskk .................................................................................................................................................... #space #geology #earthscience #climate #environment #nature #nasa #noaa

This strange photograph was captured by Alan Dyer in Alberta, Canada. What the heck is that ribbon-like thing stretched across the sky, you might wonder. STEVE (Strong Thermal Emission Velocity Enhancement’) is an aurora-like phenomenon researchers are only just now starting to understand. For years, STEVE was reported occasionally dancing alongside auroras. It was widely called a “proton arc” until researchers pointed out that protons had nothing to do with it. The mystery of STEVE is far from solved. Researchers still don’t understand why STEVE is purple–or for that matter why the underlying rivers of gas should glow at all. ................................................................................................................................................ EarthScience #Science #Space #STEVE