The edge of Earth’s atmosphere and low Earth orbit to scale with the map. Stack of pennies on right represents the Kármán line where space begins. It is 62 miles (100 km) high. Left stack represents low Earth orbit, approximately 186 miles altitude https://t.co/aRL5HuQmj3
This was Kilauea's fissure 8 on June 16, 2018 as captured photographer Ken Boyer. No, it has not been sped up and this most stunning detail [full video: https://t.co/ELH9GR4zfD]
46 years ago ...The #Apollo16 Saturn V space vehicle carrying astronauts John W. Young, Thomas K. Mattingly II, and Charles M. Duke, Jr., lifted off to the Moon on April 16, 1972, from the Kennedy Space Center Launch Complex 39A.
Lyrebirds are Australian birds most notable for their superb ability to mimic natural and artificial sounds from their environment (and other environments, if it's the case) https://t.co/2A79wK25UB [full video: https://t.co/sn3JGGgq3s]
Honduran White Bat (Ectophylla alba) roosting under Heliconia leaf, bats chewed sides of midrib causing leaf to collapse and provide shelter, rainforest...
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Vindolanda, the Roman fortified settlement in northern England is exceptional among Roman frontier sites due to the vast evidence of everyday life that has been uncovered there, including more than 6,500 discarded shoes. #TuesdayShoesday
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A backdraft is a dramatic event caused by a fire, resulting from rapid re-introduction of oxygen to combustion in an oxygen-depleted environment; for example, the breaking of a window or opening of a door to an enclosed space https://t.co/8JwOBgo9nq
The Fukang meteorite is a meteorite that was found in the mountains near Fukang, China in 2000. It contains large, gem quality olivine, or peridot, in a nickel-iron matrix https://t.co/1aDUredbub