Month: August 2024
Nab the Sennheiser MOMENTUM 3 True Wireless ANC Bluetooth Earbuds for Only $100 at Woot
These high-quality Sennheiser noise-canceling earbuds are a whopping 64% off at Woot right now. We suggest acting fast to nab them.
These high-quality Sennheiser noise-canceling earbuds are a whopping 64% off at Woot right now. We suggest acting fast to nab them.
Boeing Starliner returning empty as NASA turns to SpaceX to bring astronauts back from ISS
submitted by /u/Zealousideal-Pop1115 [link] [comments]
submitted by /u/Zealousideal-Pop1115
[link] [comments]
NASA decides to keep 2 astronauts in space until February, nixes return on troubled Boeing capsule
submitted by /u/Fit-Requirement6701 [link] [comments]
submitted by /u/Fit-Requirement6701
[link] [comments]
NASA Smashed into an Asteroid in 2022. The Debris Could End Up Reaching Earth
NASA’s 2022 DART mission “successfully demonstrated how a fast-moving spacecraft could change an asteroid’s trajectory by crashing into it,” remembers Gizmodo, “potentially providing a way to defend Earth — though the asteroid in this test was never a real threat.”
But a followup study suggests debris from that 525-foot (160-meter) asteroid “could actually strike back,” they add, “though we’re not in any danger.”
The [DART] team posits that the collision produced a field of rocky ejecta that could reach Earth within 10 years… [Various aerospace scientists] studied data collected by the Light Italian CubeSat for Imaging of Asteroids, or LICIACube, which observed DART’s impact of Dimorphos up close. Then, they fed LICIACube’s data into supercomputers at NASA’s Navigation and Ancillary Information Facility to simulate how the debris from the asteroid — basically dust and rock — may have disseminated into space. The simulations tracked about 3 million particles kicked up by the impact, some of which are large enough to produce meteors that could be spotted on Earth. Particles from the impact could get to Mars in seven to 13 years, and the fastest particles could make it to our own world in just seven years.
“This detailed data will aid in the identification of DART-created meteors, enabling researchers to accurately analyze and interpret impact-related phenomena,” the team wrote in the paper.
“However, these faster particles are expected to be too small to produce visible meteors, based on early observations,” said Dr. Eloy Peña-Asensio, who lead the research team, in an interview with Universe Today. (He’s a Research Fellow with the Deep-space Astrodynamics Research and Technology group at Milan’s Polytechnic Institute.) The team’s simulations indicated it could take up to 30 years before any of the ejecta is observed on Earth, in a new (and human-created) meteor shower called the Dimorphids.
So while they won’t pose any risk, “If these ejected Dimorphos fragments reach Earth… their small size and high speed will cause them to disintegrate in the atmosphere, creating a beautiful luminous streak in the sky.”
Read more of this story at Slashdot.
NASA’s 2022 DART mission “successfully demonstrated how a fast-moving spacecraft could change an asteroid’s trajectory by crashing into it,” remembers Gizmodo, “potentially providing a way to defend Earth — though the asteroid in this test was never a real threat.”
But a followup study suggests debris from that 525-foot (160-meter) asteroid “could actually strike back,” they add, “though we’re not in any danger.”
The [DART] team posits that the collision produced a field of rocky ejecta that could reach Earth within 10 years… [Various aerospace scientists] studied data collected by the Light Italian CubeSat for Imaging of Asteroids, or LICIACube, which observed DART’s impact of Dimorphos up close. Then, they fed LICIACube’s data into supercomputers at NASA’s Navigation and Ancillary Information Facility to simulate how the debris from the asteroid — basically dust and rock — may have disseminated into space. The simulations tracked about 3 million particles kicked up by the impact, some of which are large enough to produce meteors that could be spotted on Earth. Particles from the impact could get to Mars in seven to 13 years, and the fastest particles could make it to our own world in just seven years.
“This detailed data will aid in the identification of DART-created meteors, enabling researchers to accurately analyze and interpret impact-related phenomena,” the team wrote in the paper.
“However, these faster particles are expected to be too small to produce visible meteors, based on early observations,” said Dr. Eloy Peña-Asensio, who lead the research team, in an interview with Universe Today. (He’s a Research Fellow with the Deep-space Astrodynamics Research and Technology group at Milan’s Polytechnic Institute.) The team’s simulations indicated it could take up to 30 years before any of the ejecta is observed on Earth, in a new (and human-created) meteor shower called the Dimorphids.
So while they won’t pose any risk, “If these ejected Dimorphos fragments reach Earth… their small size and high speed will cause them to disintegrate in the atmosphere, creating a beautiful luminous streak in the sky.”
Read more of this story at Slashdot.
Starliner astronauts will come home in February on a SpaceX Crew Dragon
After more than two months of tests and discussions, NASA has decided that astronauts Butch Wilmore and Suni Williams will come home in February 2025 on a SpaceX Crew Dragon, and the Boeing Starliner they flew to the International Space Station on in June will return uncrewed. In a press conference on Saturday, Steve Stich, the program manager for NASA’s Commercial Crew Program, said “there was too much uncertainty” around the predictions for Starliner’s thrusters to move forward with a crewed return flight.
“The decision to keep Butch and Suni aboard the International Space Station and bring the Boeing Starliner home uncrewed is the result of a commitment to safety,” said NASA Administrator Bill Nelson.
Developing…This article originally appeared on Engadget at https://www.engadget.com/science/space/starliner-astronauts-will-come-home-in-february-on-a-spacex-crew-dragon-173008021.html?src=rss
After more than two months of tests and discussions, NASA has decided that astronauts Butch Wilmore and Suni Williams will come home in February 2025 on a SpaceX Crew Dragon, and the Boeing Starliner they flew to the International Space Station on in June will return uncrewed. In a press conference on Saturday, Steve Stich, the program manager for NASA’s Commercial Crew Program, said “there was too much uncertainty” around the predictions for Starliner’s thrusters to move forward with a crewed return flight.
“The decision to keep Butch and Suni aboard the International Space Station and bring the Boeing Starliner home uncrewed is the result of a commitment to safety,” said NASA Administrator Bill Nelson.
Developing…
This article originally appeared on Engadget at https://www.engadget.com/science/space/starliner-astronauts-will-come-home-in-february-on-a-spacex-crew-dragon-173008021.html?src=rss
Boeing Starliner returning empty as NASA turns to SpaceX to bring astronauts back from ISS
submitted by /u/Virtual_Information3 [link] [comments]
submitted by /u/Virtual_Information3
[link] [comments]
NASA says astronauts stuck on space station will return in SpaceX capsule
submitted by /u/Patient_Stable_5954 [link] [comments]
submitted by /u/Patient_Stable_5954
[link] [comments]
NASA will bring the Starliner astronauts home next year on SpaceX’s Crew-9 mission
Image: NASA
NASA administrator Bill Nelson announced today that US astronauts Sunita Williams and Barry Wilmore will return next February with the SpaceX Crew-9 mission after spending more than 80 days aboard the International Space Station (ISS).
According to NASA Commercial Crew Program manager Steve Stich, “As we got more and more data over the summer and understood the uncertainty of that data, it became very clear to us that the best course of action was to return Starliner uncrewed.” He said NASA found “there was just just too much uncertainty in the prediction of the thrusters.”
“If we had a way to actually predict what the thrusters would do, for the undock, and all the way through the de-orbit burn, and through the separation sequence, I think we would have taken a different course of action. But when we looked at the data and looked at the potential for thruster failures with the crew on board … it was just too much risk for the crew, and so we decided to pursue the uncrewed testflight.
Responding to a press question about how NASA can trust Boeing again, NASA associate administrator Ken Bowersox said, “We’ve had a lot of tense discussions, right? Because the call was close, and so people have a lot of emotional investment in either option, and that gives you a healthy discourse. But after that, you have to do some work to keep your team together, right?” He said that NASA remains “committed to working with Boeing.”
The two astronauts were originally scheduled to spend just eight days aboard the ISS following a successful launch of Boeing’s Starliner on June 5th before parachuting back to Earth aboard the same spacecraft. Those plans changed after thruster failures, helium leaks, and valve issues plagued the already long-delayed Starliner while it was docking with the ISS.
With limited access to the spacecraft docked with the ISS, tests at NASA’s White Sands Test Facility indicated that deformed Teflon seals may have been one of the reasons the spacecraft’s thrusters failed. But without conclusive answers, NASA waited to decide between returning the astronauts to Earth aboard the Starliner or working with SpaceX to bring them home early next year aboard the Crew-9 mission, which is planned to launch to the ISS in late September.
Developing…
Image: NASA
NASA administrator Bill Nelson announced today that US astronauts Sunita Williams and Barry Wilmore will return next February with the SpaceX Crew-9 mission after spending more than 80 days aboard the International Space Station (ISS).
According to NASA Commercial Crew Program manager Steve Stich, “As we got more and more data over the summer and understood the uncertainty of that data, it became very clear to us that the best course of action was to return Starliner uncrewed.” He said NASA found “there was just just too much uncertainty in the prediction of the thrusters.”
“If we had a way to actually predict what the thrusters would do, for the undock, and all the way through the de-orbit burn, and through the separation sequence, I think we would have taken a different course of action. But when we looked at the data and looked at the potential for thruster failures with the crew on board … it was just too much risk for the crew, and so we decided to pursue the uncrewed testflight.
Responding to a press question about how NASA can trust Boeing again, NASA associate administrator Ken Bowersox said, “We’ve had a lot of tense discussions, right? Because the call was close, and so people have a lot of emotional investment in either option, and that gives you a healthy discourse. But after that, you have to do some work to keep your team together, right?” He said that NASA remains “committed to working with Boeing.”
The two astronauts were originally scheduled to spend just eight days aboard the ISS following a successful launch of Boeing’s Starliner on June 5th before parachuting back to Earth aboard the same spacecraft. Those plans changed after thruster failures, helium leaks, and valve issues plagued the already long-delayed Starliner while it was docking with the ISS.
With limited access to the spacecraft docked with the ISS, tests at NASA’s White Sands Test Facility indicated that deformed Teflon seals may have been one of the reasons the spacecraft’s thrusters failed. But without conclusive answers, NASA waited to decide between returning the astronauts to Earth aboard the Starliner or working with SpaceX to bring them home early next year aboard the Crew-9 mission, which is planned to launch to the ISS in late September.
Developing…