NASA's Chandra Observatory Catches Giant Black Hole Rejecting Material

Image Credit: X-ray: NASA/UMass/D.Wang et al., IR: NASA/STScI

Astronomers using NASA’s Chandra X-ray Observatory have taken a major step in explaining why material around the giant black hole at the center of the Milky Way Galaxy is extraordinarily faint in X-rays. This discovery holds important implications for understanding black holes.

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NASA's Chandra Sees Eclipsing Planet in X-rays for First Time

Image Credit: X-ray: NASA/CXC/SAO/K. Poppenhaeger et al; Illustration: NASA/CXC/M. Weiss

For the first time since exoplanets, or planets around stars other than the sun, were discovered almost 20 years ago, X-ray observations have detected an exoplanet passing in front of its parent star.

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It's an Alien Blue World—But Nothing Like Earth

Artist’s conception of exoplanet HD 189733b—a “deep blue dot” reminiscent of Earth from a distance. Image Credit: NASA / ESA / M. Kornmesser

The planets and moons in our Solar System come in a wide variety of colors, and the natural beauty can be breathtaking. Now, the true color of a much more distant […]

Hubble Space Telescope Reveals Evidence of Farthest Known Planet From Its Star

A gap in the protoplanetary disk of dust and gas whirling around TV Hydrae uncovered evidence of an unseen, growing planet, according to astronomers studying Hubble data. Image Credit: NASA, ESA, J. Debes (STScI), H. Jang-Condell (University of Wyoming), A. Weinberger (Carnegie Institution of Washington), A. Roberge (Goddard Space Flight Center), G. Schneider (University […]

Sifting Through the Atmospheres of Far-off Worlds

This image shows the HR 8799 planets with starlight optically suppressed and data processing conducted to remove residual starlight. The star is at the center of the blackened circle in the image. The four spots indicated with the letters b through e are the planets. This is a composite image using 30 wavelengths of […]

Strange New Worlds: Exoplanets Abound in the Cosmos (Part 2)

A comparison of the sizes of the three known planets of the star Kepler-37 with some of the worlds of the solar system. Image Credit: NASA/JPL-Caltech

Astronomers have been dazzled by the sheer number of planets there seem to be in the galaxy. According to a recent estimate, there’s on average at least one […]

Planets, Planets Everywhere: Exoplanets Abound in the Cosmos

Illustration depicting a system of three rocky planets, each smaller than the Earth, found in orbit around the red dwarf KOI-961. Image Credit: NASA/JPL-Caltech

It has been only about 20 years since the first planets were found outside our solar system. Today, almost a thousand exoplanets have been confirmed, and the rate of discovery […]

NASA's Hubble Reveals Rogue Planetary Orbit for Fomalhaut B

This false-color composite image, taken with the Hubble Space Telescope, reveals the orbital motion of the planet Fomalhaut b. Based on these observations, astronomers calculated that the planet is in a 2,000-year-long, highly elliptical orbit. The planet will appear to cross a vast belt of debris around the star roughly 20 years from now. […]

Kepler Discovers 461 Possible New Exoplanets

The Kepler Space Telescope is proving that the Milky Way galaxy is filled with planets—some potentially similar to our home world. Image Credit: NASA

On Monday, Jan. 07, 2013, NASA announced that the space agency’s Kepler Space Telescope had discovered a staggering 461 new possible planet candidates. Four of these are less than twice […]