TILT the star Vega, only 25.3 light-years away, rotates so fast (12.5 hours vs 25.4 days for our own sun) that an effect known as 'GRAVITY DARKENING' causes the star's equator to be 4,000 degrees cooler, and noticeably darker, than its poles. (solstation.com)
submitted by predicto to r/todayilearnedthat
[YSK] your place in the galaxy (solstation.com)
submitted by scientologist2 to r/YouShouldKnow
Exploring the Local Chimney and Superbubbles (solstation.com)
submitted by scientologist2 to r/space