Scientific American 24 Jul 2019, 16:00 UTC It barely got a mention in the media, but in June the U.S. Navy briefed members of Congress on UFOs. The fact that we live in a culture where this is only a minor news story gives me pause; if someday extraterrestrial life actually visits Earth, the story will least make the top 10 list of "Most Significant Things That Have Happened in Human History." To be fair, the briefing was classified, so we don't actually know what Congress was told. But according to a 2015 survey, 56 percent of Americans already "believe" in UFOs, regardless of what Navy pilots may or may not have seen.
SciTech Daily 24 Jul 2019, 08:34 UTC All atoms and molecules emit distinctive spectral lines across the spectrum, the details of which depend on the internal structures of the species (for example, the vibration and rotation properties of molecules) and how they are excited by their environments.
China’s Tiangong 2 was Destroyed Last Week, Burning up in the Atmosphere Over the South Pacific Ocean24 Jul 2019, 08:30 UTC On Friday, July 19th, China’s Tiangong-2 (“Heavenly Palace”) space laboratory successfully entered Earth’s atmosphere under controlled conditions and burned up above the South Pacific Ocean. This marked the successful completion of all of Tiangong-2’s tasks, which constituted China’s second attempt at testing their capability to conduct research and human operations in Low Earth Orbit (LEO).
Scientific American 23 Jul 2019, 20:00 UTC The spacecraft is set to harness the power of sunlight alone to alter its orbit around Earth
NASA Space Station Blog 23 Jul 2019, 17:30 UTC A quartet of Expedition 60 astronauts are relaxing today ahead of planned operations to receive a new space freighter on Friday. Meanwhile, a pair of cosmonauts checked Soyuz spacecraft systems and collected air samples aboard the International Space Station.
astrobites 23 Jul 2019, 15:47 UTC Despite our home planet being embedded in it, the Milky Way and its immediate environment remain an enigma to astronomy. Once thought to have few satellite neighbors, The Milky Way has been found to have many dwarf galaxies orbiting it. New stellar streams are being uncovered as well, likely remnants of past gravitational interactions with dwarf galaxies, in which the Milky Way pulled rivers of stars from its now-dissipated partners. This burst of discoveries of new nearby and entangled structures are thanks to advancements in technology allowing astronomers to observe dimmer objects and to track stars with greater precision.
Universe Today 23 Jul 2019, 14:57 UTC The man known as the ‘father of flight control’ – Christopher C. Kraft, Jr. – has died at the age of 95. Kraft joined the NASA Space Task Group in November 1958 and became the first flight director. He created the concepts of mission planning, and real-time monitoring and control for the first U.S. crewed spaceflight missions and became a driving force in the U.S. space program.