Tag Archive for 'Star'

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,...

This artist’s concept portrays PDS 70 and its inner protoplanetary disk. Image credit: NASA / ESA / CSA / J. Olmsted, STScI.

Webb Detects Water in Terrestrial Planet-Forming Zone around PDS 70

Jul 25, 2023 by Enrico de Lazaro

Terrestrial and sub-Neptune exoplanets are expected to form in the inner regions of protoplanetary disks around their parent stars. Water plays a key role...

An artist’s impression of the two-faced white dwarf ZTF J203349.8+322901.1. Image credit: K. Miller, Caltech / IPAC.

Newfound White Dwarf Has Different Compositions on Its Opposite Faces

Jul 19, 2023 by News Staff

ZTF J203349.8+322901.1, nicknamed Janus after the two-faced Roman god of transition, is a transitioning white dwarf with two faces: one side of its atmosphere...

An artist’s representation of BepiColombo flying through precipitating electrons that can trigger X-ray auroras on the surface of Mercury. Image credit: Thibaut Roger / Europlanet.

Auroral Mechanisms May Be Universal throughout Our Solar System

Jul 18, 2023 by News Staff

An analysis of data obtained during the ESA/JAXA BepiColombo spacecraft’s first Mercury flyby reveals that Mercury’s southern magnetosphere aurorae...

This VISTA image shows IC 2631, a reflection nebula some 500 light-years away in the southern constellation of Chamaeleon. Image credit: ESO / Meingast et al.

VISTA Observes Beautiful Reflection Nebula

Jul 17, 2023 by Enrico de Lazaro

ESO’s Visible and Infrared Survey Telescope for Astronomy (VISTA) shot this image of the reflection nebula IC 2631. This VISTA image shows IC 2631, a...

This Hubble image shows Arp 263, an irregular galaxy located 27.1 million light-years away in the constellation of Leo. The color image of Arp 263 was made from separate exposures taken in the visible and near-infrared regions of the spectrum with Hubble’s Advanced Camera for Surveys and Wide Field Camera 3. 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 / J. Dalcanton / A. Filippenko.

Hubble Space Telescope Spots Triangle-Shaped Galaxy

Jul 17, 2023 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have produced a spectacularly detailed image of the irregular galaxy Arp 263. This Hubble image shows...

An artist’s impression of a supermassive dark star. Image credit: Sci.News.

Webb May Have Spotted Supermassive Dark Stars

Jul 15, 2023 by Enrico de Lazaro

The first generation of stars in the Universe is yet to be observed. There are two leading theories for those objects: hydrogen burning Population III...

This image, taken with the Gemini South telescope, shows IC 2220, a reflection nebula some 1,200 light-years away in the constellation of Carina. Image credit: International Gemini Observatory / NOIRLab / NSF / AURA / T.A. Rector, University of Alaska Anchorage & NSF’s NOIRLab / J. Miller, Gemini Observatory & NSF’s NOIRLab / M. Rodriguez, Gemini Observatory & NSF’s NOIRLab / M. Zamani, NSF’s NOIRLab.

Gemini South Telescope Observes Reflection Nebula

Jul 13, 2023 by News Staff

This new image from the Gemini South telescope, one half of the International Gemini Observatory, operated by NSF’s NOIRLab, shows the nearly symmetrical...

Brown dwarfs are common in the Universe but are rarely found to emit radio waves. Image credit: NASA.

ASKAP Telescope Detects Periodic Radio Emission from Ultracool Dwarf

Jul 13, 2023 by Enrico de Lazaro

The T8-dwarf WISE J062309.94-045624.6 is the coolest and latest-type star observed to produce radio emission, according to an analysis of data from CSIRO’s...

This Webb image shows a part of the Rho Ophiuchi cloud complex, the closest star-forming region to Earth. Image credit: NASA / ESA / CSA / STScI / Klaus Pontoppidan, STScI.

Webb Celebrates First Anniversary with Spectacular Image of Nearby Star-Forming Region

Jul 12, 2023 by News Staff

The Webb team has released a beautiful image of a small star-forming region in the Rho Ophiuchi cloud complex. This Webb image shows a part of the Rho...

This image, taken with ESA’s Solar Orbiter on April 1, 2022, shows a partial section of the Sun with gas at 1 million degrees; the red paths correspond to some of the rain tracks analyzed by Antolin et al. Image credit: Patrick Antolin / ESA / Solar Orbiter / EUI / HRI.

Meteor-Like ‘Fireballs’ Spotted in Solar Corona

Jul 6, 2023 by News Staff

Coronal rain is the most dramatic display of cooling in the Sun’s corona. It corresponds to cool and dense clumps of plasma appearing over a timescale...

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