Researchers from the University of Bologna and the Leibniz Institute for Astrophysics Potsdam (AIP) along with other institutes have proposed a new way to address the Hubble tension by comparing estimates of the universe’s age rather than its expansion rate. Using precise stellar data, they determined ages for carefully selected very old Milky Way stars […]

When most people think of a supernova, they’re thinking of a Type II core-collapse supernova. These are massive stars that have reached the end of their time on the main sequence. They’ve used up their supply of hydrogen and continue fusing heavier elements until the star can’t support its own mass. The core collapses and […]

A Japanese startup’s third attempt to put a satellite in orbit failed on Thursday after its rocket spiraled back to Earth shortly after takeoff.

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For the first time, the Tibet ASγ Experiment has successfully measured magnetohydrodynamic (MHD) turbulence on scales below one parsec (approximately 3.3 light-years) within the gamma-ray halo surrounding the Geminga pulsar wind nebula (PWN). This observation extends to the highest energies, above 100 tera-electron volts (TeV), providing new insights into the behavior of cosmic rays and […]

In a first, a space mission led by NASA and France has tracked Earth’s rivers swelling and shrinking from month to month over the course of a year and found significantly less of a swing than previous model-based estimates. A record drought in the Amazon likely influenced the tally made by the Surface Water and […]