Four exoplanets, how much has changed in one year… Hubble’s latest look

Unlike rocky planets like Earth, Jupiter, Saturn, Uranus, and Neptune, which are outside of the eight planets in the solar system, are giant planets made of gas and ice such as hydrogen, helium, ammonia, and methane. The distance from the sun is 700 to 4.5 billion km, which is 5 to 30 times the Earth-sun distance. The Hubble Space Telescope, a joint product of NASA and the European Space Agency, is

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