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Neptune, too, might have a new companion around. Uranus can pull and push minor bodies around. Image credit: NASA Between the orbits of Saturn and Neptune, there is a population of minor space bodies known as the Centaurs. There could be up to 10 million of them, but they tend to have unstable orbits due to the gravitational influences of the giant planets. Occasionally, some enter a temporary stable orbit, joining one of the planets in a resonance. This is what is believed to have happened between Centaur 2015 OU194 and the planet Uranus, the first ever report of this...

Jupiter as seen by Hubble. Image credit: NASA, ESA, A. Simon (Goddard Space Flight Center) and M.H. Wong (University of California, Berkeley) ================================================================= The Great Red Spot is a storm larger than our whole planet. It is clearly visible on the Southern Hemisphere of Jupiter, even to small telescopes, and we have been observing it for centuries. It became clear in the last few years that it is shrinking. Now, new research suggests that the cause of this is a change in diet. Simulations suggest that the growth of the larger storm depends on continuously incorporating smaller storms that get...