The green flash is an optical phenomenon you can see shortly after sunset or before sunrise. For a second or two, the upper rim of the sun flashes green.
Cath Cooper - and others in EarthSky's community - caught last night's beautiful waning gibbous moon, red planet Mars and blue-white Spica, brightest star in Virgo.
Tardigrades are microscopic animals. They can go into a state of suspended animation and survive a long time without water or oxygen, even in the vacuum of space.