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Zeta Oviucci once orbited close to another star, before its companion was destroyed in a supernova explosion. Infrared data from Spitzer revealed shockwaves made of material that exploded from the star’s surface and collided with gas on its way. Chandra’s data show X-ray emission bubbles located around the star, generated by gas heated to tens of millions of degrees by the shock wave. Chandra’s data helps tell more about the story of this wild star. credit: X-ray: NASA/CXC/Univ. Cambridge / c. Cesc Raines et al; Radio: NSF/NRAO/VLA; Optics: PanSTARRS Zeta Ophiuchi is the only star that may ever have a companion destroyed during a supernova. The supernova explosion sent zeta Ophiuchi into space as seen in the Spitzer data (in green and red) and Chandra (in blue). The X-rays that Chandra discovered came from heating the gas to millions of degrees by the shockwave effect. Scientists are working to match the computational model of this object to interpret the data ...

A newly discovered star, now called S4716, is moving at 5,000 miles (8,000 km) per second around the black hole at the center of our galaxy, the Milky Way, space.com reported. The vast expanse of our universe means that astronomers are always discovering something they’ve never seen before. Earlier this week, astronomers spotted two asteroids the size of a bus heading for Earth, which will pass just a quarter of the distance that separates the Moon from us. In addition to asteroids, our galaxy is also attracting the attention of astronomers looking for signs of other planets that support life. Right at the center of the Milky Way, there is a supermassive black hole dubbed Sagittarius A* or Sgr A* and S4716 orbits this black hole at high speed. What we know about S4716 From observations made so far, we know that at 5,000 miles (8,000 km) per second or 18 million miles (29 million km) per hour, S4716 is the fastest star orbiting Sgr A*. It completes an orbit around a black hole ...