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$This Hubble image shows the dwarf starburst galaxy ESO 495-21. The galaxy is just 3,000 light-years across, a fraction of the size of the Milky Way, but that is not stopping the galaxy from furiously forming huge numbers of stars. This image is a composite of separate exposures acquired by Hubble’s Wide Field Planetary Camera 2 (WFPC2) and Advanced Camera for Surveys (ACS) instruments. Image credit: NASA / ESA / Hubble.$

Dwarf Starburst Galaxy Harbors Supermassive Black Hole

Jun 14, 2019 by News Staff

A starburst galaxy called ESO 495-21 is just 3,000 light-years across, but it harbors a black hole of about one million solar masses at its core. This...

The surface of Europa looms large in this newly-reprocessed color view; image scale is 1.6 km per pixel; north on Europa is at right. Image credit: NASA / JPL-Caltech / SETI Institute.

Hubble Spots Sodium Chloride on Jupiter’s Moon Europa

Jun 13, 2019 by News Staff

Astronomers using the NASA/ESA Hubble Space Telescope have discovered that the yellow color visible on portions of the surface of Europa, the second Galilean...

The Hubble Tuning Fork illustrated with images of nearby galaxies from the Sloan Digital Sky Survey. Image credit: Karen Masters, Sloan Digital Sky Survey.

Galaxy Zoo Volunteers Help Re-Tune ‘Hubble Tuning Fork’

Jun 12, 2019 by News Staff

Galaxies are important building blocks of the Universe. Some are simple, while others are very complex in structure. In 1927, as one of the first steps...

NGC 4395 is located in the constellation of Canes Venatici, approximately 14 million light-years away. Image credit: Mount Lemmon Observatory / CC BY-SA 4.0.

Astronomers ‘Weigh’ NGC 4395’s Central Black Hole

Jun 11, 2019 by News Staff

An international team of astronomers has found that the central black hole of the nearby spiral galaxy NGC 4395 has a mass of about 10,000 solar masses...

LOFAR image centered on the Abell 0399-Abell 0401 system; color and contours show the radio emission at 140 MHz; the faceting of the field is shown with red lines. Image credit: Govoni et al, doi: 10.1126/science.aat7500.

LOFAR Telescope Sees Ridge of Radio-Emitting Plasma between Two Merging Galaxy Clusters

Jun 10, 2019 by News Staff

Astronomers using the Low-Frequency Array (LOFAR) telescope network have detected a vast ridge of radio emission connecting the merging galaxy clusters...

Hubble Looks at Explosive Spiral: NGC 4051

Jun 10, 2019 by News Staff

The NASA/ESA Hubble Space Telescope has produced a spectacularly detailed image of a spiral galaxy called NGC 4051. This Hubble image shows the intermediate...

An artist’s impression of a disk of cool interstellar gas surrounding the supermassive black hole at the center of the Milky Way. Image credit: NRAO / AUI / NSF / S. Dagnello.

ALMA Spots Rotating Disk of Cool Hydrogen around Milky Way’s Central Black Hole

Jun 7, 2019 by News Staff

There is a supermassive black hole of nearly 4 million solar masses at the center of our Milky Way Galaxy. A large reservoir of hot and cooler hydrogen...

Hubble’s visible-light image of the compact elliptical galaxy Markarian 1216. Image credit: NASA / STScI.

Markarian 1216: Isolated Galaxy Has Dark Matter-Rich Core

Jun 6, 2019 by News Staff

Markarian 1216 (Mrk 1216 for short) is a compact elliptical galaxy about 316 million light-years away. New data from NASA’s Chandra X-ray Observatory...

This artist’s illustration depicts a coronal mass ejection, which involves a large-scale expulsion of material, and have frequently been observed on our Sun. Image credit: NNASA / CXC / INAF / Argiroffi et al / S. Wiessinger.

Chandra Detects Huge Coronal Mass Ejection from HR 9024

Jun 6, 2019 by News Staff

Coronal mass ejections (CMEs), often associated with solar flares, are the most powerful magnetic phenomena occurring on the Sun. Now, astronomers using...

Artist’s impression of a potentially habitable exomoon orbiting a giant planet. Image credit: Sci-News.com.

Exomoons Could Host Alien Life, Astrophysicist Says

Jun 6, 2019 by News Staff

Exomoons — natural satellites of planets outside our Solar System — could offer another clue about the pool of alien worlds that may be home...

This artist’s illustration shows two gas giant exoplanets orbiting the young star PDS 70. Image credit: J. Olmsted, STScI.

Astronomers Directly Image Two Protoplanets around PDS 70

Jun 4, 2019 by News Staff

Astronomers using the Multi Unit Spectroscopic Explorer (MUSE) spectrograph on ESO’s Very Large Telescope have directly imaged two still-forming gas...

This Spitzer image shows the Cepheus C and Cepheus B regions. The image was compiled using data from Spitzer’s Infrared Array Camera (IRAC) and the Multiband Imaging Photometer (MIPS). The colors correspond with IRAC wavelengths of 3.6 microns (blue), 4.5 microns (cyan) and 8 microns (green), and 24 microns (red) from the MIPS instrument. Image credit: NASA / JPL-Caltech.

Spitzer Sees Stars and Dense Clouds in Cepheus

Jun 3, 2019 by News Staff

A large celestial mosaic from NASA’s Spitzer Space Telescope shows multiple clusters of stars and clouds of gas and dust in the constellation of Cepheus. This...

This Hubble image shows the barred spiral galaxy NGC 7773. The image is made up of observations from Hubble’s Wide Field Camera 3 (WFC3) in the infrared and optical parts of the spectrum. Three filters were used to sample various wavelengths. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / J. Walsh.

Hubble Space Telescope Spies NGC 7773

Jun 3, 2019 by News Staff

The NASA/ESA Hubble Space Telescope has captured an amazing new photo of the barred spiral galaxy NGC 7773. This Hubble image shows the barred spiral galaxy...

Supernovae discovered by Yasuda et al: there are three images for each supernova -- for before it exploded (left), after it exploded (middle), and the supernova itself. Image credit: Yasuda et al, doi: 10.1093/pasj/psz050.

Astronomers Discover 1,824 New Supernova Candidates

May 31, 2019 by News Staff

Astronomers using the 8-m Subaru Telescope have identified 1,824 new supernova candidates, including 58 Type Ia supernovae over 8 billion light-years away. Supernovae...

Hubble captured this view of comet 46P/Wirtanen on December 13, 2018. Image credit: NASA / ESA / D. Bodewits, Auburn University / J.-Y. Li, Planetary Science Institute.

Hyperactive Comets Contain ‘Ocean-Like’ Water

May 31, 2019 by News Staff

NASA’s Stratospheric Observatory for Infrared Astronomy (SOFIA) observed the hyperactive Jupiter-family comet 46P/Wirtanen as it made its closest approach...

Scholz’s star flew through the Oort Cloud 70,000 years ago. Image credit: José A. Peñas / SINC.

Did Nearby Supernovae Induce Hominins to Walk on Two Legs?

May 30, 2019 by News Staff

Between 8 and 2 million years ago, cosmic-ray energy from one or more nearby supernovae reached Earth and pummeled the planet’s atmosphere, initiating...

An artist’s impression of NGTS-4b and its star. Image credit: Mark Garlick / University of Warwick.

Astronomers Discover ‘Forbidden’ Short-Period Neptune-Sized Exoplanet

May 30, 2019 by News Staff

An international team of astronomers has discovered a Neptune-sized exoplanet orbiting NGTS-4, a K-dwarf star located 922 light-years from Earth. Named...

An artist’s conception of the HR 858 planetary system. Image credit: Sci-News.com.

Compact System of Three Super-Earths Found around Naked-Eye Star

May 29, 2019 by Natali Anderson

Astronomers using NASA’s Transiting Exoplanets Survey Satellite (TESS) have discovered a compact three-planet system around the sixth-magnitude star...

The 18 newly-discovered exoplanets (orange and green) are much smaller than Neptune, three of them even smaller than Earth and two more as large as Earth. Planet EPIC 201238110.02 is the only one of the new planets cool enough to potentially host liquid water on its surface. Image credit: NASA / JPL / NOAA / GSFC / Suomi NPP / VIIRS / Norman Kuring / Max Planck Institute for Solar System Research / René Heller.

Astronomers Discover 18 New Small Exoplanets in Kepler Data

May 28, 2019 by News Staff

A team of astronomers from the Max Planck Institute for Solar System Research, the Georg August University of Göttingen and Sonneberg Observatory has...

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