Tag Archive for 'Star'

An artist’s impression of Jupiter’s moon Europa occulting a distant star. Image credit: NASA / JPL-Caltech / DLR / Sci-News.com.

Astronomers Observe Stellar Occultation by Jupiter’s Moon Europa

Jul 29, 2019 by News Staff

In March 2017, Brazilian National Observatory astronomer Bruno Morgado and colleagues took advantage of the beginning of the Jupiter passage through a...

A star known as S0-2 made its closest approach to Sagittarius A*, the a supermassive black hole at the center of the Milky Way, in 2018. Image credit: Nicolle Fuller / National Science Foundation.

Einstein’s Theory of General Relativity Aces Relativistic Redshift Test

Jul 26, 2019 by News Staff

In a test of Einstein’s theory of general relativity near the supermassive black hole at the center of our Milky Way Galaxy, an international group of...

An artist’s impression of a pair of orbiting white dwarfs, ZTF J153932.16+502738.8. Image credit: Caltech / IPAC.

Astronomers Discover Record-Breaking White Dwarf Binary System

Jul 25, 2019 by News Staff

Astronomers using the KPED (Kitt Peak Electron Multiplying CCD demonstrator) instrument at NSF’s Kitt Peak National Observatory have discovered ZTF J153932.16+502738.8,...

An artist’s rendering of a gas giant in a binary stellar system. Image credit: NASA / JPL-Caltech / T. Pyle.

TESS Finds Still-Forming Gas Giant in Binary Star System

Jul 25, 2019 by News Staff

Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) have discovered an exoplanet planet larger than Neptune but smaller than Saturn...

Hot Jupiters Have Powerful Magnetic Fields

Jul 23, 2019 by News Staff

Hot Jupiters — massive gaseous exoplanets orbiting close to their host stars — have surprisingly powerful magnetic fields, many times stronger...

This image from Data Release 1 of the Dark Energy Survey shows 2MASX J04180598-6336523, the host galaxy of the Type Ia supernova ASASSN-18tb; the position of the supernova is marked by the white ticks. Image credit: Kollmeier et al, doi: 10.1093/mnras/stz953.

TESS Observes Unusual Type Ia Supernova: ASASSN-18tb

Jul 19, 2019 by News Staff

Astronomers have used NASA’s Transiting Exoplanet Survey Satellite (TESS) to see what was happening around the supernova ASASSN-18tb in the first moments...

An artist’s impression of the gas giant Kepler 1625b with its large moon, Kepler 1625b-i; the pair has a similar mass and radius ratio to the Earth-Moon system but scaled up by a factor of 11. Image credit: Sci-News.com.

Large Moons around Extrasolar Gas Giants Could Become ‘Ploonets’

Jul 18, 2019 by News Staff

Ploonets — large regular moons ejected from orbits around close-in gas giant exoplanets — could explain many baffling astronomical observations,...

An artist’s impression of LTT 1445Ab in the triple-star system LTT 1445. Image credit: Sci-News.com.

Newly-Discovered Rocky Exoplanet Has Three Red Suns

Jul 17, 2019 by Natali Anderson

Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) have discovered a terrestrial planet orbiting a star in the triple-star system...

This VLT image shows the planetary nebula Abell 24. Image credit: ESO.

VLT Snaps Stunning Planetary Nebula Image: Abell 24

Jul 9, 2019 by News Staff

The European Southern Observatory (ESO) has released a beautiful photo taken by the FORS (FOcal Reducer and Spectrograph) instrument on the Very Large...

Dai et al used Chandra to measure the spin of five quasars. Gravitational lensing of the light from each of these black holes by an intervening galaxy has created multiple images of each quasar, as shown by these Chandra images of four of the targets. Image credit: NASA / CXC / University of Oklahoma / Dai et al.

Chandra Uses Gravitational Lens to Capture Spinning Black Holes

Jul 5, 2019 by News Staff

By combining the capability of NASA’s Chandra X-ray Observatory with the power of a natural phenomenon called gravitational lensing, a team of astronomers...

Astronomers have monitored the Eta Carinae binary system for more than two decades. It has been prone to violent outbursts, including an episode in the 1840s during which ejected material formed the bipolar bubbles seen here. Now, using Hubble’s Wide Field Camera 3 (WFC3) instrument to probe the nebula in ultraviolet light, they have uncovered the glow of magnesium embedded in warm gas (shown in blue) in places they had not seen it before. The luminous magnesium resides in the space between the dusty bipolar bubbles and the outer shock-heated nitrogen-rich filaments (shown in red). The streaks visible in the blue region outside the lower-left lobe are a striking feature of the image. These streaks are created when the star’s light rays poke through the dust clumps scattered along the bubble’s surface. Wherever the ultraviolet light strikes the dense dust, it leaves a long, thin shadow that extends beyond the lobe into the surrounding gas. Image credit: NASA / ESA / Hubble / N. Smith, University of Arizona / J. Morse, BoldlyGo Institute.

Hubble Captures Eta Carinae in Ultraviolet Light

Jul 2, 2019 by News Staff

Eta Carinae is a binary stellar system approximately 7,500 light-years away in the constellation Carina. Also known as HD 93308 and Hen 3-481, the system...

An artist’s conception of the L 98-59 planetary system. Image credit: NASA’s Goddard Space Flight Center.

TESS Discovers Planetary System with Three Terrestrial-Size Exoplanets

Jul 1, 2019 by News Staff

Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) have discovered three small planets orbiting a bright M-dwarf star called L 98-59....

This Hubble image shows a spiral galaxy called NGC 972. The image is a composite of separate exposures acquired by Hubble’s Advanced Camera for Surveys (ACS) instrument. Two 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 / L. Ho.

Hubble Sees Dusty Star-Forming Galaxy: NGC 972

Jul 1, 2019 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has captured a striking new photo of the spiral galaxy NGC 972. This Hubble image shows a spiral galaxy called NGC...

An artist’s impression of two planets orbiting Teegarden’s Star. Image credit: Institute for Astrophysics, University of Göttingen.

Two Earth-Mass Exoplanets Found in Habitable Zone around 8-Billion-Year-Old Red Dwarf

Jun 20, 2019 by Enrico de Lazaro

Astronomers using the CARMENES (Calar Alto high-Resolution search for M dwarfs with Exoearths with Near-infrared and optical Échelle Spectrographs) instrument...

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...

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...

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...

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