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Scientists May Have Finally “Seen” Dark Matter

Space.com | Scientific Research

Scientists May Have Finally “Seen” Dark Matter

“Scientists may have ‘seen’ dark matter for the first time, thanks to NASA’s Fermi gamma-ray space telescope. If so, this would mark the first direct detection of the universe’s most mysterious substance…

A team of researchers, led by Tomonori Totani from the Department of Astronomy at the University of Tokyo, trained the Fermi spacecraft on the regions of the Milky Way where dark matter should congregate, namely at the center of our galaxy, and hunted for this telltale gamma-ray signature.

Well, Totani thinks we finally found that signature.

‘We detected gamma rays with a photon energy of 20 gigaelectronvolts (or 20 billion electronvolts, an extremely large amount of energy) extending in a halolike structure toward the center of the Milky Way galaxy,’ Totani said. ‘The gamma-ray emission component closely matches the shape expected from the dark matter halo.’

And this isn’t the only close match. The energy signature of these gamma-rays closely matches those predicted to emerge from the annihilation of colliding WIMPs, which are predicted to have a mass around 500 times that of a proton, the ordinary matter particles found at the heart of atoms. Totani suggests there aren’t any other astronomical phenomena that easily explain the gamma-rays observed by Fermi.”

From Space.com.

Financial Times | Natural Disasters

Greece Turns to Space in Fight Against Wildfires

“With wildfires burning north-west of Athens, Greece is testing whether a new fleet of thermal satellites can give firefighters earlier warning and a clearer view of the blazes that are becoming harder to contain in a warming climate.

The Hellenic Fire System, a constellation of four compact, low-flying thermal satellites, transmitted its first images to Earth in June. The system is due to become fully functional in September, with firefighters still being trained to use it.

But it is already providing data to authorities, including about devastating fires that ripped across popular Greek island resorts and the region of Attica near Athens in recent weeks.”

From Financial Times.

Space.com | Space

SpaceX Launches 3 Giant BlueBird Direct-to-Cell Satellites

“A SpaceX Falcon 9 rocket carrying three of AST SpaceMobile's massive direct-to-cell BlueBird satellites launched from Florida's Cape Canaveral Space Force Station at 3:50 a.m. EDT (0650 GMT) on Wednesday, minutes after the opening of its 96-minute window.

Today's launch further expands AST SpaceMobile's constellation in low Earth orbit (LEO), which will beam internet service directly to unmodified smartphones once operational.

The newcomers bring the total number of BlueBird spacecraft launched to 13 and marks a significant milestone toward getting the constellation fully up and running, according to AST SpaceMobile.”

From Space.com.

Wall Street Journal | Space

Starlink Ends Quarter With 12 Million Subscribers

“Starlink has enjoyed a robust expansion in recent years, with subscribers rising to 8.9 million by the end of 2025. The subscriber count jumped almost 16% between then and the end of March. The latest tally represents a 17% gain from that quarter.

Revenue per Starlink subscriber during the latest quarter held steady at $66 from the first three months of 2026, though it was down from $85 per subscriber for the year-earlier period. The company has said it expects this measurement to decline as it signs up customers outside of North America and adds lower-priced service plans.”

From Wall Street Journal.

Science | Space

NASA Mission Predicts Solar Explosion’s Arrival at Earth

“In the wee hours of 31 May 2025, billions of tons of charged particles erupted from the Sun and began to hurtle in our direction. Spacecraft tracked the liftoff of that huge burst of plasma, enabling U.S. officials to predict when the eruption would strike Earth, within a 12-hour window. But a new view of the Sun’s roiling outer atmosphere could have enabled scientists to peg the solar storm’s arrival time much more precisely—to within just half an hour.

That precision comes from PUNCH, a NASA mission keeping an eye on a part of space that’s been a blind spot for space weather. Like a sensitive 3D camera whose field of view covers half the sky, it watches everything escaping the Sun’s atmosphere and traveling toward us. 'We can track space weather all the way across the inner Solar System,' says Craig DeForest, the mission’s principal investigator.

He and his colleagues have now shown that based on those observations, they could have forecast within minutes when the 2025 storm would have struck Earth’s magnetic field, threatening satellites, power grids, and other technologies.”

From Science.