New Moon Discovered by Hubble Orbiting Third Largest Dwarf Planet in Kuiper Belt

Two images of dwarf planet 2007 OR10 from Hubble, taken a year apart, showing the small moon. Image Credit: NASA/ESA/C. Kiss (Konkoly Observatory)/J. Stansberry (STScI)

Moons are exceedingly common in the Solar System – Jupiter alone has 67! But smaller planets do as well of course, except for Mercury and Venus, and even some […]

First High-Resolution Images Released of Ceres from Dawn's New Lowest Orbit

One of the first new images taken in Dawn’s lowest orbit around Ceres, showing the crater chain called Gerber Catena. Photo Credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA

NASA has released the first images of the dwarf planet Ceres from the Dawn spacecraft’s new lowest orbit. This is the closest view that Dawn will have of Ceres and its […]

Mystery Solved? Odd Bright Spots on Ceres Explained as Salt Deposits

False color view of Occator crater on Ceres, showing the unusual bright spots. The image was taken by the framing camera on NASA’s Dawn spacecraft from a distance of about 2,700 miles (4,400 kilometers). Image Credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA

There now might be a definitive answer to a puzzle which has intrigued both scientists and the […]

Haze Detected Above Mystery Bright Spots on Ceres

The brightest of the bright spots on Ceres, in Occator crater. Haze detected above them may help scientists determine if they are made of ice, salts or something else. Photo Credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA

The intriguing bright spots on dwarf planet/asteroid Ceres have been fascinating the public and scientists alike for the past few months, and […]

Of Warm Gas and Galaxy Mergers: Collisions Between Galaxies Can Halt Star Formation, According to New Study

A composite image of the gravitationally interacting galaxies NGC 3226 (at the top) and NGC 3227 (bottom), which clearly shows the tidally generated large structures that surround them as a result of a past collision with a third galaxy. Optical wavelengths in the image are shown in gray scale. The infrared glow of dust […]

Construction Site Ahead: Hubble Observes Planet-Forming Circumstellar Dust Disks in Great Detail

A set of high-resolution images of the vast circumstellar debris disks around 11 nearby young stars, which were obtained with the Hubble Space Telescope, have helped astronomers to study their complex and dynamic structure for the first time in great detail. This visible-light survey, called HST/GO 12228, was done with Hubble’s Space Telescope Imaging […]

NASA's Hubble Helps Solve Mystery of Ultra-Compact, Burned-Out Galaxies

An odyssey of exploration began on 25 April 1990, when Steve Hawley gingerly pulled Discovery’s robot arm away from the Hubble Space Telescope. Photo Credit: NASA

Astronomers using NASA’s Hubble Space Telescope and Europe’s Herschel Space Observatory have pieced together the evolutionary sequence of compact elliptical galaxies that erupted and burned out early in […]

Comet or Asteroid? Herschel Space Observatory Detects Water Outgassing on Dwarf Planet Ceres

A team of astronomers using ESA’s Herschel Space Observatory have discovered clear signals of water vapour coming off Ceres. Image Credit: ESA/ATG medialab/Küppers et al.

A new study published online in the weekly scientific journal Nature on Jan. 22 reports on observations made by the Herschel Space Observatory of water vapour seen coming out […]

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 […]