Red sprites, secondary jets and newly discovered green afterglow called "ghosts" triggered by red sprites. A dozen vibrant red sprites were recorded on this evening and only two events had the green afterglow.... continue reading

posted by newtboy 1 year 11 months ago • 981 views • 2:32

Earth’s outer shell is made of two materials whose different densities and thicknesses give rise to two distinct “levels” on the planet’s surface.

posted by Mekanikal 3 years 11 months 3 weeks ago • 773 views • 3:10

YouTube: This video is about why it's harder to successfully land spacecraft and landers and rovers on Mars than on Earth, or Venus, or the Moon, or Titan, or asteroids. It all comes down to atmospheric... continue reading

posted by PlayhousePals 4 years 11 months 2 weeks ago • 580 views • 2:02

Originally called hydrogen inflammable air when he discovered it until he breathed it in and blew it out over a candle... tested electricity by measuring how much agony it caused him... and did experiments... continue reading

posted by RFlagg 1 decade 11 months 4 weeks ago • 920 views • 6:27