Tag Archive for 'Star'

Chandra Spots High-Velocity Knots of Stellar Debris in Kepler’s Supernova Remnant

Aug 20, 2020 by News Staff

New images from NASA’s Chandra X-ray Observatory show small knots of metal-rich debris in the remnant of Kepler’s supernova, also known as SN 1604,...

An artist’s conception of a potential solar companion, which theorists believe was developed in the Sun’s birth cluster and later lost. If proven, the solar companion theory would provide additional credence to theories that the Oort Cloud formed as we see it today, and that Planet Nine was captured rather than formed in place. Image credit: M. Weiss.

Early Solar System May Have Had Two Suns

Aug 19, 2020 by News Staff

In a paper published in the Astrophysical Journal Letters, Harvard University astrophysicists Avi Loeb and Amir Siraj show that an equal-mass stellar companion...

An artist’s rendition of a supernova explosion. Image credit: ESA / Hubble / L. Calcada / NASA’s Goddard Space Flight Center.

Nearby Supernovae Caused Late Devonian Extinctions, Scientists Say

Aug 19, 2020 by News Staff

Multiple supernova explosions about 65 light-years away may have contributed to the ozone depletion and several subsequent extinction events at the Devonian-Carboniferous...

This artist’s impression was generated using an image of Betelgeuse from 2019 taken with the SPHERE instrument on ESO’s Very Large Telescope. Image credit: ESO / NASA / ESA / Hubble / M. Kornmesser.

Betelgeuse’s Mysterious Dimming Likely Caused by Huge Outburst

Aug 13, 2020 by News Staff

The red supergiant Betelgeuse is one of the brightest stars in the night sky and appears even more luminous because it is so close to Earth, only 650 light-years...

An artist’s illustration of NASA’s Transiting Exoplanet Survey Satellite. Image credit: NASA’s Goddard Space Flight Center.

NASA’s TESS Spacecraft Completes Its Primary Mission

Aug 11, 2020 by News Staff

On July 4, 2020, NASA’s Transiting Exoplanet Survey Satellite (TESS) completed its primary mission and is continuing its search for new extrasolar worlds. An...

This composite image shows the Sun with open magnetic field lines (colored) overlapping with regions with enhanced helium abundance. Image credit: NASA.

Helium Structures Spotted in Solar Corona

Aug 11, 2020 by News Staff

Astronomers using NASA’s HERSCHEL (Helium Resonance Scattering in the Corona and Heliosphere) sounding rocket have obtained global images of the helium...

These pre-explosion (left panel and right top panel) and post-explosion (right bottom panel) images from Hubble show SN 2019ehk and its host galaxy Messier 100. The location of SN 2019ehk is marked by red lines and the alignment uncertainty is indicated by pink ellipses. Image credit: Jacobson-Galán et al, doi: 10.3847/1538-4357/ab9e66.

Astronomers Catch X-Rays from Calcium-Rich Supernova

Aug 5, 2020 by News Staff

Astronomers have for the first time used X-ray imaging to examine a calcium-rich supernova. Their findings, published in the Astrophysical Journal, show...

An artist’s conception of the dwarf star TVLM-513-46546 and its massive planet TVLM 513b. Image credit: Luis A. Curiel Ramirez.

Radio Astronomers Discover Saturn-Sized Exoplanet around Ultracool Dwarf

Aug 5, 2020 by Natali Anderson

Astronomers using NSF’s Very Long Baseline Array, a continentwide system of 10 radio telescope antennas located between Hawaii and Puerto Rico, have...

This ALMA image shows the planet-forming disk around the young star RU Lupi. The inset image (lower left, red disk) shows the DSHARP observation of the dust disk with rings and gaps that hint at the presence of forming planets. The new observation shows a large spiral structure (blue), made out of gas, that spans far beyond the compact dust disk. Image credit: ALMA / ESO / NAOJ / NRAO / J. Huang and S. Andrews / AUI / NSF / S. Dagnello.

ALMA Spots Gaseous Spiral Arms around Young Variable Star

Aug 4, 2020 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered a giant set of spiral arms around the young variable star RU...

An artist’s illustration of SN 1987A. Image credit: NRAO / AUI / NSF / B. Saxton.

ALMA May Have Found Neutron Star in Supernova Remnant SN 1987A

Jul 31, 2020 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have found new evidence that a very young neutron star is hiding deep inside...

This highly detailed image of the planetary nebula NGC 2899 was captured using the FORS instrument on ESO’s Very Large Telescope. Image credit: ESO.

VLT Looks at Incredibly Beautiful Planetary Nebula: NGC 2899

Jul 30, 2020 by News Staff

Astronomers using the FORS (FOcal Reducer and low dispersion Spectrograph) instrument on ESO’s Very Large Telescope (VLT) have obtained a stunning image...

An artist’s impression of the thin stream of stars torn from the Phoenix globular cluster, wrapping around the Milky Way (left). Wan et al targeted bright red giant stars (right) to measure the chemical composition of the disrupted Phoenix globular cluster. Image credit: James Josephides, Swinburne Astronomy Productions / S5 Collaboration.

Ancient Globular Cluster Was Tidally Disrupted by Milky Way Two Billion Years Ago

Jul 30, 2020 by News Staff

The Phoenix stellar stream, a thin over-density of stars in the halo of our Milky Way Galaxy originally identified by the Dark Energy Survey, is composed...

An artist’s impression of the magnetar SGR 1935+2154. Image credit: ESA.

Astronomers Detect Short Bursts of Radio Waves from Distant Magnetar

Jul 30, 2020 by News Staff

Using ESA’s International Gamma-Ray Astrophysics Laboratory (Integral), NASA’s Neil Gehrels Swift Observatory and several radio telescopes, astronomers...

RAVE observed a total of 451,783 Milky Way stars. The Sun is located at the center of the coordinate system. The colors represent radial velocities: red are receding stars and stars depicted in blue are approaching. Image credit: Leibniz Institute for Astrophysics Potsdam / K. Riebe / RAVE Collaboration / R. Hurt, SSC / NASA / JPL-Caltech.

RAVE Survey Maps Nearly 452,000 Milky Way Stars

Jul 28, 2020 by News Staff

Astronomers from the Radial Velocity Experiment (RAVE) Collaboration have released a database of spectra and associated fundamental stellar parameters...

This Hubble image shows the open cluster NGC 2203. The image includes optical and near-infrared observations from Hubble’s Wide Field Camera 3 (WFC3). 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 / L. Girardi

Hubble Space Telescope Views NGC 2203

Jul 27, 2020 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have captured a striking photo of the open cluster NGC 2203. This Hubble image shows the open cluster...

An artist’s impression of the Saturn-sized exoplanet TOI 813b. Image credit: Sci-News.com.

Astronomers Discover One of the Coolest Transiting Gas Giants

Jul 23, 2020 by Natali Anderson

Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and the Next-Generation Transit Survey (NGTS), astronomers have discovered a transiting...

This image, captured by the SPHERE instrument on ESO’s Very Large Telescope, shows TYC 8998-760-1 accompanied by two giant planets, TYC 8998-760-1b and TYC 8998-760-1c. The two planets are visible as two bright dots in the center (TYC 8998-760-1b) and bottom right (TYC 8998-760-1c) of the frame. Other bright dots, which are background stars, are visible in the image as well. Image credit: ESO / Bohn et al.

Astronomers Directly Image Two Giant Exoplanets around Young Sun-Like Star

Jul 22, 2020 by Natali Anderson

Astronomers using the SPHERE (Spectro-Polarimetric High-contrast Exoplanet Research) instrument on ESO’s Very Large Telescope (VLT) have discovered a...

This two-panel illustration shows a black hole surrounded by a disk of gas, before and after the disk is partially dispersed. In the left panel, the ball of white light above the black hole is the black hole corona, a collection of ultra-hot gas particles that forms as gas from the disk falls into the black hole. The streak of debris falling toward the disk is what remains of a star that was torn apart by the black hole’s gravity. The right panel shows the black hole after the debris from the star has dispersed some of the gas in the disk, causing the corona to disappear. Image credit: NASA / JPL-Caltech.

Colliding Star Destroys Supermassive Black Hole’s Corona in Distant Galaxy

Jul 17, 2020 by News Staff

An international team of astronomers has watched as an X-ray corona of a supermassive black hole in the active galactic nucleus 1ES 1927+654 was abruptly...

A high-resolution image from the Extreme Ultraviolet Imager (EUI) on Solar Orbiter, taken with the HRIEUV telescope on May 30, 2020. The circle in the lower left corner indicates the size of Earth for scale. The arrow points to one of the ubiquitous features of the solar surface, called ‘campfires’ and revealed for the first time by these images. On May 30, Solar Orbiter was roughly halfway between the Earth and the Sun, meaning that it was closer to the Sun than any other solar telescope has ever been before. Image credit: ESA / NASA / Solar Orbiter / EUI Team / CSL / IAS / MPS / PMOD / WRC / ROB / UCL / MSSL.

Solar Orbiter Beams Back Its First Images of the Sun

Jul 17, 2020 by News Staff

Solar Orbiter, a space mission of international collaboration between ESA and NASA, made its first close approach to the Sun in mid-June and captured unique...

An artist’s impression of a thermonuclear supernova: the material ejected by the supernova will initially expand very rapidly, but then gradually slow down, forming an intricate giant bubble of hot glowing gas; eventually, the charred remains of the white dwarf that exploded will overtake these gaseous layers, and speed out onto its journey across our Milky Way Galaxy. Image credit: Mark Garlick / University of Warwick.

Thermonuclear Supernova Ejects White Dwarf from Binary System

Jul 15, 2020 by News Staff

A white dwarf star called SDSS J124043.01+671034.68 (SDSS J1240+6710) is traveling at 900,000 km/h (559,234 mph) through our Milky Way Galaxy. It also...

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