26Mercury
The orbit of Mercury follows a unique pattern different from other planets which remained unexplained until Einstein’s theory of bending space-time due to large nearby gravitation. Previous theory was there was another planet between mercury and the sun, Vulcan.
27. From the time Pluto was discovered until the time it was demoted from planethood, it still hadn't made one complete revolution around the sun.
28. Uranus is the only planet named after a Greek god instead of a Roman one. If it had been named after the equivalent Roman god, we would have called it Caelus.
29. Mars’ moons, Phobos and Deimos orbit in opposite directions along the equator. To an observer on the surface, the moons would appear to track in opposite directions, and both moons would vanish behind the bulge of the planet at certain latitudes
30. The Tadpole Galaxy is a spiral galaxy with the distinct feature of having a 280,000 light-year long trail of stars that resemble a tail.
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31Europa
On Europa, one of Jupiter's moons, the ocean is 62 miles deep meaning you could fit seven Mt. Everest(s) one on top of the other inside it. The deepest part of our ocean, Marianas Trench, can only fit one with 2 miles to spare.
32. The north pole of Mars is surrounded by a flat and featureless lowland, several kilometers lower the mean height of the planet, called Vastitas Borealis.
