The Sun’s solar activity cycle moves into high gear and knocks down 40 Starlink satellites. Peak is 2025. How many more could be impacted?
Category: satellites – Page 79
Increasing solar activity could play havoc with mega-constellations like Starlink in the coming years.
A powerful magnetic storm takes out most of a batch of Starlink satellites the day after launch.
Elon Musk’s company launched a Falcon 9 rocket bearing the 49 satellites from Kennedy Space Center in Florida on Thursday (Feb. 3), but a geomagnetic storm that struck a day later sent the satellites plummeting back toward Earth, where they will burn up in the atmosphere.
“Unfortunately, the satellites deployed on Thursday were significantly impacted by a geomagnetic storm on Friday,” SpaceX said in a statement. “Preliminary analysis show[s] the increased drag at the low altitudes prevented the satellites from leaving safe mode to begin orbit-raising maneuvers, and up to 40 of the satellites will reenter or already have reentered the Earth’s atmosphere.”
The satellites were hit by the storm just one day after launch.[/s].
The latest on some space debris…
The Falcon 9 DSCOVR’s booster: 7 Feb. 2022.
The animation above comes from 268, single, 4-second exposures, remotely taken with the “Elena” (PlaneWave 17″+Paramount ME+SBIG STL-6303E) robotic unit available at Virtual Telescope. The telescope tracked the apparent motion of the booster, so it looks like a sharp dot, with surrounding stars moving on the background. East is up, South on the left.
There was a VERY strong Moon interference, the booster was in the same spot of the sky as our natural satellite and grabbing it was quite hard. As we can see, the booster is blinking, as it is tumbling with a period of about 90 seconds.
A Chinese satellite was spotted apparently clearing up space junk. But US officials are concerned the technology could be used against non-junk satellites.
Last month, a private satellite tracking company spotted a Chinese spacecraft apparently grabbing and throwing a dead satellite away into a “graveyard” orbit.
Connecting & enabling a smarter planet — alistair fulton, VP, wireless & sensing products, semtech.
Alistair Fulton (https://www.semtech.com/company/executive-leadership/alistair-fulton) is the Vice President and General Manager of Semtech’s Wireless and Sensing Products Group.
Semtech Corporation is a supplier of analog and mixed-signal semiconductors and advanced algorithms for consumer, enterprise computing, communications and industrial end-markets. It has 32 locations in 15 countries in North America, Europe, and Asia.
Researchers at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have gained insight into a fundamental process found throughout the universe. They discovered that the magnetic fields threading through plasma, the charged state of matter composed of free electrons and atomic nuclei, can affect the coming together and violent snapping apart of the plasma’s magnetic field lines. This insight could help scientists predict the occurrence of coronal mass ejections, enormous burps of plasma from the sun that could threaten satellites and electrical grids on Earth.
The scientists focused on the role of guide fields, magnetic fields threading through plasma blobs, or chunks, known as plasmoids. The guide fields add rigidity to the system and ultimately affect the ratio of large plasmoids to small ones and help determine how much reconnection occurs.
Plasmoid reconnection resembles the parallel computing that occurs in smart phones or in high-powered computers that model the weather. During this computing, many processors are calculating simultaneously and making the overall calculation rate quicker. Similarly, plasmoids speed up the overall rate of reconnection by making it occur in many places at once.
