This is Zeta Ophiuchi. A giant star zooming through space at 54,000 miles per hour creates a bowshock, ripples that are the result of billowing stellar winds colliding with the dust ahead of it. About 370 light-years away, Zeta Ophiuchi is 80,000 times brighter than the sun; it would be one of the brightest stars in the sky, but it’s invisible from Earth, obscured by dust and clouds. Image credit: NASA/JPL-Caltech
New Horizons Zooms Past Neptune on 25th Anniversary of Voyager 2 25 years ago today Voyager 2 made the only close approach to Neptune, coming within 3,000 miles of the blue gas giant. At the time of the flyby, the spacecraft captured this incredible image of the planet’s southern hemisphere. Two dark spots are visible: an Earth-sized Great Dark Spot located on the far left, and Dark Spot 2 located near bottom. A bright cloud dubbed “Scooter” accompanies the Great Dark Spot. Recent ...
This picture shows the size of a sphere that would contain all of Earth's water in comparison to the size of the Earth. The blue sphere sitting on the United States, reaching from about Salt Lake City, Utah to Topeka, Kansas, has a diameter of about 860 miles (about 1,385 kilometers) , with a volume of about 332,500,000 cubic miles (1,386,000,000 cubic kilometers).
~~Supernova Remnant Cassiopeia A (NASA, Chandra) ~ for the first time, a multiwavelength three-dimensional (3-D) reconstruction of a supernova remnant has been created. This stunning visualization of Cassiopeia A (Cas A), the result of an explosion approximately 330 years ago by NASA's Marshall Space Flight Center~~
This photo from NASA's Hubble Space Telescope shows an ominous pillar of gas and dust known as the Cone Nebula. The image shows the top portion of the nebula that is 2.5 light years in height. The Cone Nebula is 2,500 light-years from Earth in the Monoceros constellation. The red halo of light seen around the pillar is caused when ultraviolet radiation causes hydrogen gas in the nebula to glow.
Vela Pulsar (PSR J0835-4510 or PSR B0833-45) - Associated with the Vela Supernova Remnant, this neutron star has a spin of 11.195 times per second and is a radio, optical, X-ray and gamma emitting pulsar. It is in the constellation Vela, about 1,000 light-years from Earth. Image is from the Chandra X-ray Observatory