A newly discovered Jupiter-like world is so hot, it’s being vaporized by its own star. With a dayside temperature of more than 7,800 degrees Fahrenheit, KELT-9b is a planet that is hotter than most stars. But its blue A-type star, called KELT-9, is even hotter — in fact, it is probably unraveling the planet through evaporation.
A NASA spacecraft set to explore a metallic asteroid for the first time will launch in 2022, a year earlier than originally planned, and reach its destination in 2026, four years ahead of schedule, giving ground teams a shorter wait for the mission’s scientific payoff and shaving $100 million off the project’s total cost, officials said Wednesday.
Fresh off its fifth passage through a gap between Saturn’s atmosphere and rings, NASA’s robotic Cassini spacecraft is looping toward a close brush with the planet’s innermost ring next week, when the probe will again use its high-gain antenna as a shield against icy particles that may lie in its path.
NASA’s Dawn spacecraft successfully observed Ceres at opposition on April 29, taking images from a position exactly between the Sun and Ceres’ surface. Mission specialists had carefully maneuvered Dawn into a special orbit so that the spacecraft could view Occator Crater, which contains the brightest area of Ceres, from this new perspective.