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This graphic shows the position of the Voyager 1 and Voyager 2 probes relative to the heliosphere, a protective bubble created by the Sun that extends well past the orbit of Pluto. Voyager 1 crossed the heliopause, or the edge of the heliosphere, in 2012. Voyager 2 is still in the heliosheath, or the outermost part of the heliosphere.Image Credit: NASA/JPL-Caltech

NASA’s Voyager 2 could be nearing interstellar space

NASA's Voyager 2 probe, which is traveling through the outermost layer of the heliosphere, has detected an increase in cosmic rays that originate outside...
Eta Carinae's great eruption in the 1840s created the billowing Homunculus Nebula, imaged here by Hubble. Now about a light-year long, the expanding cloud contains enough material to make at least 10 copies of our Sun. Astronomers cannot yet explain what caused this eruption. Credit: NASA, ESA, and the Hubble SM4 ERO Team

NASA’s NuSTAR mission proves superstar Eta Carinae shoots cosmic rays

Astronomers know that cosmic rays with energies more prominent than 1 billion electron volts (eV) come to us from beyond nearby planetary group. But...
Ultra-High-Energy Cosmic Rays Come from Galaxies Far, Far Away

Ultra-High-Energy Cosmic Rays Come from Galaxies Far, Far Away

A new study observed that the cosmic rays emerged from outside the milky way galaxy, making their way towards earth. Scientists made this observation...