Galaxy – huge collection of gas, dust, stars held together by gravity. Most galaxies contain a trillion stars. There may be 170 billion galaxies.
10 billion, trillion stars in universe – 10,000,000,000,000,000,000,000!
Olympus Mons, highest mountain in solar system. 80,000 feet tall, 15 miles higher than Mount Everest.
One million Earth’s could fit within Sun.
Calcium, carbon, hydrogen, nitrogen, oxygen make both humans and stars.
Sagittarius B – 26,000 light years away, has billion litres of vinyl alcohol.!
Lowest note in universe is rumbling of black hole, 250 million light years away. It’s 57 octaves below middle C.
Star called S2 orbits a super massive black hole at 11,000,000 mph!
Space smells like seared steaks, hot metal, welding fumes.
4 galaxies seen from Earth with naked eye: Milky Way, Andromeda, Small, Large Magellanic Clouds.
Closest galaxy to Milky Way is 80,000 light years away. 50 billion planets in Milky Way.
Can you see me? A tiny dot, left hand corner in red. I see you. Stupendous!