A GREAT QUEST is underway to discover Earthsize worlds in their stars’ habitable zones. Along the way, astronomers have been surprised to learn that the most typical size of planet in our galaxy is one with no counterpart in our own solar system.
The President's Budget Request for NASA in 2020 would start a Mars Sample Return mission and ramp up efforts to send humans to the Moon. But it would still kick off the first year of a new decade with a half-billion dollar cut to the space agency.
The OSIRIS-REx team recently issued their first data release to the Planetary Data System. This release doesn’t include any closeup pictures of asteroid Bennu, but it does include all the pictures they took during their September 2017 Earth flyby.