A international team including Danielle Berg and John Chisholm have confirmed that what flows into a galaxy is a lot cleaner than what flows out. This galactic gas cycle regulates the creation of stars. The study provides a concrete benchmark to test theories of galaxy evolution.
Astronomers have disproved a 2018-announced planet orbiting Barnard’s Star, the second-closest star to our Sun. The findings are based on observations with the Habitable Zone Planet Finder instrument on the Hobby-Eberly Telescope.
Yifan Zhou and Brendan Bowler have used Hubble Space Telescope to get a rare look at a young, Jupiter-sized planet that is growing by feeding off material surrounding a young star 370 light-years from Earth.
Today is the autumnal equinox. The Sun crosses the equator from north to south, beginning a season that will last until the winter solstice, in December. The seasons are reversed in the southern hemisphere, where today marks the start of spring.