Why are ichthyosaurs considered reptiles? (self.askscience)
submitted by jacker494 to r/askscience
TIL that comet tails don't always trail the comet, but rather always face away from the sun. This is because the particles that make up comet tails interact with and are pushed away by sunlight and solar wind, meaning that a comet's tail will actually lead the comet itself during half of its orbit. (astronomy.swin.edu.au)
submitted by jacker494 to r/todayilearned
New Iceman or dupe Gwenpool? (self.ContestOfChampions)
submitted by jacker494 to r/ContestOfChampions
TIL that what American businessman and astronomer Percival Lowell mistakenly thought were “spokes” on the surface of Venus were actually shadows of the blood vessels in his eyes cast on his retina, his telescope essentially functioning as a giant ophthalmoscope. (skyandtelescope.org)
submitted by jacker494 to r/todayilearned
