Tag Archive for 'Star'

This Webb image shows HH 211, a Herbig-Haro object located 1,000 light-years away in the constellation of Perseus. Image credit: NASA / ESA / CSA / Webb / T. Ray, Dublin Institute for Advanced Studies.

Outflows from Young Protostars are Mostly Molecular, Webb Astronomers Find

Sep 17, 2023 by Natali Anderson

Herbig-Haro (HH) objects are formed when stellar winds or jets of gas spewing from protostars form shock waves colliding with nearby gas and dust at high...

This Hubble image shows Terzan 12, a globular cluster some 15,000 light-years away in the constellation of Sagittarius. Image credit: NASA / ESA / Hubble / R. Cohen, Rutgers University.

Hubble Space Telescope Observes Terzan 12

Sep 8, 2023 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have captured a stunning image of the globular cluster Terzan 12, a vast, tightly bound collection...

This image of the Sun was taken with the Extreme Ultraviolet Imager on board the ESA/NASA Solar Orbiter mission. Image credit: Auchère et al., doi: 10.1051/0004-6361/202346039.

Solar Orbiter Captures Extreme-Ultraviolet Images of Sun’s Corona

Sep 6, 2023 by News Staff

Astronomers have used the Extreme Ultraviolet Imager (EUI) instrument onboard the ESA/NASA Solar Orbiter spacecraft in a new mode of operation to observe...

This image of SNR 1987A was taken with Webb’s Near-Infrared Camera. At the center, material ejected from the supernova forms a keyhole shape. Just to its left and right are faint crescents newly discovered by Webb. Beyond them an equatorial ring, formed from material ejected tens of thousands of years before the supernova explosion, contains bright hot spots. Exterior to that is diffuse emission and two faint outer rings. Image credit: NASA / ESA / CSA / M. Matsuura, Cardiff University / R. Arendt, NASA’s Goddard Spaceflight Center & University of Maryland, Baltimore County / C. Fransson.

Webb Focuses on Supernova 1987A Remnant

Aug 31, 2023 by Enrico de Lazaro

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have begun the study of SNR 1987A, one of the most renowned supernova remnants. This image...

An artist’s rendition of the two exoplanets and their parent star in the TOI-4600 system. Image credit: Tedi Vick.

Two Long-Period Giant Exoplanets Found Orbiting TOI-4600

Aug 31, 2023 by Natali Anderson

Astronomers report the discovery and validation of two long-period giant exoplanets orbiting the K-dwarf star TOI-4600, first detected using observations...

This artist’s impression shows the millisecond pulsar PSR J1023+0038 stealing gas from its companion star. Image credit: ESO / M. Kornmesser.

Matter Ejections Explain Peculiar High-Low Mode Switches in Distant Millisecond Pulsar

Aug 30, 2023 by Enrico de Lazaro

The millisecond pulsar PSR J1023+0038 is known to switch between two brightness modes almost constantly, something that until now has been an enigma. This...

An artist’s impression of a hot-Jupiter exoplanet. Image credit: ESA / ATG Medialab / CC BY-SA 3.0 IGO.

Astronomers Confirm Detection of Chromium Hydride in Atmosphere of WASP-31b

Aug 28, 2023 by Enrico de Lazaro

Chromium hydride is often used to probe atmospheric temperatures and classify objects called brown dwarfs into spectral types because it’s abundant only...

$Plasma is constantly streaming away from the Sun, forming the solar wind. A likely source of this plasma is coronal holes, regions of the Sun’s corona with magnetic field lines that open outward. Chitta et al. observed a coronal hole in the extreme ultraviolet using the ESA/NASA Solar Orbiter spacecraft and identified several types of small-scale jets within it. Large numbers of jets occurred during the observation, but each one lasted only a few dozen seconds. The authors calculated that the jets provide enough energy and plasma to supply a large fraction of the solar wind, at least during quiet periods. Image credit: ESA / NASA / Solar Orbiter / EUI Team / Lakshmi Pradeep Chitta, Max Planck Institute for Solar System Research / CC BY-SA 3.0 IGO.$

Solar Orbiter Spots Tiny Jets Escaping from Outer Atmosphere of the Sun

Aug 28, 2023 by News Staff

Extreme ultraviolet images of the Sun obtained by the Extreme Ultraviolet Imager (EUI) instrument onboard the ESA/NASA Solar Orbiter spacecraft have revealed...

The dark vertical streak at the center of this Hubble image hides the protostellar object OH 339.88-1.26. Image credit: NASA / ESA / Hubble / J. Tan.

Hubble Finds Intermediate-Mass Protostellar Object in Ara

Aug 28, 2023 by News Staff

The NASA/ESA Hubble Space Telescope has taken a detailed image of the surroundings of the spectacular protostellar object OH 339.88-1.26. The dark vertical...

A giant black hole in PGC 43234 destroyed a large star and threw its pieces into space; the X-ray data reveal the relative amount of nitrogen compared to carbon in this stellar debris field. Image credit: NASA / CXC / University of Michigan / Miller et al. / M. Weiss.

ASASSN-14li: Supermassive Black Hole Destroys Massive Star, Throws Its Pieces into Space

Aug 22, 2023 by News Staff

Astronomers using NASA’s Chandra X-ray Observatory, ESA’s XMM-Newton and other telescopes have found evidence for a massive stellar disruption (over...

This sequence of Hubble images chronicles the waxing and waning of the amount of cloud cover on Neptune. Image credit: NASA / ESA / Erandi Chavez, UC Berkeley / Imke de Pater, UC Berkeley.

Astronomers Discover Connection between Neptune’s Cloudy Weather and 11-Year Solar Cycle

Aug 17, 2023 by News Staff

Neptune is the most distant planet in the Solar System, an ice-giant that boasts an active and chaotic atmosphere. Using archival near-infrared observations...

In a few million years, HD 45166 will explode as a very bright, but not particularly energetic, supernova. During this explosion, its core will contract, trapping and concentrating the star’s already daunting magnetic field lines. The result will be a neutron star with a magnetic field far greater than its progenitor. Image credit: NOIRLab / AURA / NSF / P. Marenfeld / M. Zamani.

Highly Unusual Wolf-Rayet Star Will Evolve into Magnetar, Astronomers Say

Aug 17, 2023 by News Staff

Using spectropolarimetric data gathered by various telescopes around the globe, astronomers from the University of Amsterdam and elsewhere have identified...

Hallakoun et al. report observations revealing an extremely irradiated low-mass companion to the hot white dwarf WD 0032-317. Image credit: NASA / ESA / G. Bacon, STScI.

Newly-Discovered Brown Dwarf is Hotter than the Sun

Aug 15, 2023 by Enrico de Lazaro

WD 0032-317B, a brown dwarf orbiting around the hot, low-mass white dwarf WD 0032-317, is estimated to have a surface temperature of about 8,000 K and...

This image, taken with the VIRCAM instrument on ESO’s Visible and Infrared Survey Telescope for Astronomy, shows NGC 6723, a globular cluster some 28,000 light-years away in the constellation of Sagittarius. The image is based on data obtained through three filters. Image credit: ESO / Meingast et al.

VISTA Telescope Captures NGC 6723 in Infrared Light

Aug 14, 2023 by Enrico de Lazaro

Astronomers using ESO’s Visible and Infrared Survey Telescope for Astronomy (VISTA) at Paranal Observatory have produced a spectacularly detailed infrared...

This Webb image shows Earendel, a massive B-type star more than twice as hot as our Sun, and about a million times more luminous. Image credit: NASA / ESA / CSA / D. Coe, STScI, AURA, ESA & Johns Hopkins University / B. Welch, NASA’s Goddard Space Flight Center & University of Maryland, College Park / Z. Levay.

Earendel is Massive B-Type Star, Webb Astronomers Say

Aug 9, 2023 by News Staff

Earendel, the farthest known star, is a massive B-type star more than twice as hot as our Sun, and about a million times more luminous, according to an...

On August 31, 2012, a long filament of solar material that had been hovering in the Sun’s atmosphere, the corona, erupted out into space at 4:36 p.m. EDT. The CME traveled at over 900 miles per second. It did not travel directly toward Earth, but did connect with Earth’s magnetic environment, or magnetosphere, with a glancing blow, causing aurora to appear on the night of September 3. Image credit: NASA’s Goddard Space Flight Center.

HAWC Observatory Detects High-Energy Gamma Rays from the Sun

Aug 7, 2023 by News Staff

New results from the High Altitude Water Cherenkov (HAWC) observatory extend the bright, hard gamma-ray emission from the solar disk observed with NASA’s...

An artist’s impression of a gas-giant exoplanet. Image credit: Sci.News.

Astronomers Discover Jupiter-Sized Exoplanet around Low-Mass Star

Aug 4, 2023 by Enrico de Lazaro

Using data from TRAPPIST-South/North, SPECULOOS, and MuSCAT3 facilities, astronomers have discovered an unusual Jupiter-sized exoplanet orbiting the red...

This Hubble image shows NGC 6652, a globular cluster located around 30,000 light-years away in the constellation of Sagittarius. Image credit: NASA / ESA / Hubble / A. Sarajedini / G. Piotto.

Hubble Space Telescope Zooms in on NGC 6652

Jul 31, 2023 by Enrico de Lazaro

NASA has released a high-resolution close-up image of the globular cluster NGC 6652 captured by the NASA/ESA Hubble Space Telescope. This Hubble image...

$This Webb image shows a pair of actively forming stars, known as Herbig-Haro 46/47, in high-resolution near-infrared light. To find them, trace the bright pink and red diffraction spikes until you hit the center. The stars are within the orange-white splotch. They are buried deeply in a disk of gas and dust that feeds their growth as they continue to gain mass. The disk is not visible, but its shadow can be seen in the two dark, conical regions surrounding the central stars. Image credit: NASA / ESA / CSA / Joseph DePasquale, STScI.$

Webb Sees Pair of Herbig-Haro Objects in Near-Infrared Light

Jul 28, 2023 by Enrico de Lazaro

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have captured a new image of Herbig-Haro (HH) 46/47, a tightly bound pair of actively forming...

This composite image shows V960 Mon, a young star located over 5,000 light-years away in the constellation of Monoceros. Observations obtained using the Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE) instrument on ESO’s VLT, represented in yellow in this image, show that the dusty material orbiting V960 Mon is assembling together in a series of intricate spiral arms extending to distances greater than the entire Solar System. Meanwhile, the blue regions represent data obtained with ALMA. The ALMA data peers deeper into the structure of the spiral arms, revealing large dusty clumps that could contract and collapse to form giant planets roughly the size of Jupiter via a process known as gravitational instability. Image credit: ESO / ALMA / NAOJ / NRAO / Weber et al.

Astronomers See Signs of Planet Formation around V960 Mon

Jul 26, 2023 by News Staff

The formation of giant planets has traditionally been divided into two pathways: core accretion and gravitational instability. However, in recent years,...

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