Finding a Missing Black Hole
Astronomers have no evidence that a distant black hole estimated to weigh between 3 billion and 100 billion times the mass of the Sun is anywhere to be found.
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Astronomers have no evidence that a distant black hole estimated to weigh between 3 billion and 100 billion times the mass of the Sun is anywhere to be found.
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NASA is targeting a two-hour test window that opens at 5 p.m. EST Saturday, Jan. 16, for the hot fire test of NASA’s Space Launch System (SLS) rocket core stage at the agency’s Stennis Space Center near Bay St. Louis, Mississippi.
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NASA and the Government of Japan have finalized an agreement for the lunar Gateway, an orbiting outpost that commercial and international partners will build together.
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With NASA astronaut Victor Glover monitoring aboard the International Space Station, an upgraded SpaceX cargo Dragon spacecraft undocked from the International Docking Adapter on the station’s space-facing port of the Harmony module at 9:05 a.m. EST.
It is the first undocking of a U.S. commercial cargo craft from the complex. Previous cargo Dragon spacecraft were attached and removed from the space station using the station’s robotic Canadarm2.
Dragon will fire its thrusters to move a safe distance from the space station during the next 36 hours. On Wednesday, Jan. 13, Dragon will conduct a deorbit burn at 7:37 p.m. to begin its re-entry sequence into Earth’s atmosphere. Dragon is expected to splash down west of Tampa off the Florida coast about 8:27 p.m. The splashdown will not be broadcast.
The upgraded cargo Dragon capsule used for this mission contains double the powered locker availability of previous capsules, allowing for a significant increase in the research that can be carried back to Earth.
Splashing down off the coast of Florida enables quick transportation of the science aboard the capsule to the agency’s Kennedy Space Center’s Space Station Processing Facility, delivering some science back into the hands of the researchers as soon as four to nine hours after splashdown. This shorter transportation timeframe allows researchers to collect data with minimal loss of microgravity effects. Previous cargo Dragon spacecraft returned to the Pacific Ocean, with quick-return science cargo processed at SpaceX’s facility in McGregor, Texas, and delivered to NASA’s Johnson Space Center in Houston.
Dragon launched Dec. 6 on a SpaceX Falcon 9 rocket from Launch Complex 39A at NASA’s Kennedy Space Center in Florida, arriving at the station just over 24 hours later and achieving the first autonomous docking of a U.S. commercial cargo resupply spacecraft. The spacecraft delivered more than 6,400 pounds of hardware, research investigations and crew supplies.
Get space station news, images and features via social media on Instagram at: @iss, ISS on Facebook, and on Twitter @Space_Station and @ISS_Research.
Mark Garcia
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NASA Television and the agency’s website are broadcasting live coverage for the departure of an upgraded SpaceX cargo Dragon spacecraft from the International Space Station. NASA astronaut Victor Glover is monitoring the activity aboard the station.
The targeted undocking time has been moved to optimize communication coverage; commands to undock will be sent at 9 a.m. EST with physical separation of the two spacecraft about 9:05 a.m.
The undocking will be the first time a U.S. commercial cargo craft autonomously departs from the station’s International Docking Adapter.
The spacecraft is filled with more than 4,400 pounds of valuable scientific experiments and other cargo to return to Earth to complete SpaceX’s 21st commercial resupply services mission for NASA.
Dragon will fire its thrusters to move a safe distance from the station’s space-facing port of the Harmony module and exit the area of the space station to begin its return to Earth. On Wednesday, Dragon will initiate a deorbit burn to begin its re-entry sequence into Earth’s atmosphere then make a parachute-assisted splashdown around 8:27 p.m. – the first return of a cargo resupply spacecraft off the Florida coast west of Tampa. The deorbit burn and splashdown will not be broadcast.
For departure coverage and more information about the mission, visit: https://blogs.nasa.gov/spacestation. Get space station news, images and features via social media on Instagram at: @iss, ISS on Facebook, and on Twitter @Space_Station and @ISS_Research.
Mark Garcia
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