NASA's mineral dust detector starts gathering data

After being installed on the exterior of the International Space Station, NASA's Earth Surface Mineral Dust Source Investigation (EMIT) mission has provided its first view of Earth. The milestone, called "first light," took ...

Heaviest neutron star to date is a 'black widow' eating its mate

A dense, collapsed star spinning 707 times per second—making it one of the fastest spinning neutron stars in the Milky Way galaxy—has shredded and consumed nearly the entire mass of its stellar companion and, in the process, ...

Solar storm to hit Earth's magnetic field on July 21

Something is happening to the sun. One of the regions of the solar atmosphere currently exhibiting sunspots caught the attention of observatories on July 11, when there was a sudden increase in ultraviolet and X-ray brightness. ...

No trace of dark matter halos

According to the standard model of cosmology, the vast majority of galaxies are surrounded by a halo of dark matter particles. This halo is invisible, but its mass exerts a strong gravitational pull on galaxies in the vicinity. ...

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