The table contains 373 X-ray sources down to 0.35-8.0keV flux of 10-15 erg/cm-2 /s over 0.4deg 2, 170 of which are reported for the first time.

Astronomers already knew these stars harbored planets, because they had been detected earlier by watching the characteristic wobble that the unseen planets' gravity produces in the stars they circle. NASA's upcoming Wide Field Infrared Survey Telescope (WFIRST), scheduled for launch in the mid-2020s, will have the power to survey the sky 1,000 times faster than the Hubble Space Telescope, with Hubble-quality detail, in the near-infrared. With vision that spans the ultraviolet through visible and into the near infrared, Hubble investigates everything from black holes to planets around other stars. NASA.gov brings you images, videos and interactive features from the unique perspective of America’s space agency. Orbiting the Earth since 1990, the Hubble Space Telescope has helped to answer some of the most compelling astronomical questions of our time, and uncovered mysteries we never knew existed.

At about 4 billion years old, these six are almost as old as the sun. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our mission to pioneer the future in space exploration, scientific discovery and aeronautics research. Using the Hubble Space Telescope (HST), astronomers have now determined just when these structured formed. Space telescopes are among humankind’s greatest scientific achievements of the last fifty years. Observations from the Spitzer Space Telescope indicate six middle-aged sun-like stars with much thinner dust disks around them. In a search with the Parkes radio telescope of 56 unidentified Fermi-Large Area Telescope (LAT) gamma-ray sources, we have detected 11 millisecond pulsars (MSPs), 10 of them discoveries, of which five were reported by Kerr et al.We did not detect radio pulsations from six other pulsars now known in …

As it turns out, there are at least two serious problems with any suggestion that the Universe exhibits homogeneity. The M31PHATCXO table presents data that combines deep Chandra ACIS-I observations with extensive Hubble Space Telescope (HST) imaging from the Panchromatic Hubble Andromeda Treasury (PHAT) of the M 31 disk. This banner text can have markup.. web; books; video; audio; software; images; Toggle navigation Another survey, covering one two-thousandth of visible space, showed that the Universe does appear uniform—but only on scales larger than 150 million light-years (Cowen, 1990).

This book describes the instruments themselves and what they were designed to discover about the Solar System and distant stars.