Astronomy News

New Research Sheds Light on Internal Structure of Dwarf Planet Eris

This image, taken with the NASA/ESA Hubble Space Telescope on August 30, 2006, shows the dwarf planet Eris (center) and its moon Dysnomia. Image credit: NASA / ESA / M. Brown, California Institute of Technology.
Dec 4, 2023 by Natali Anderson

The trans-Neptunian dwarf planet Eris is tidally locked to its small moon Dysnomia. Recently obtained bounds on the mass of Dysnomia demonstrate that Eris must be unexpectedly dissipative (‘squishy’) for it to have despun over the age of the Solar System. New research shows that Eris must have differentiated into an ice shell and rocky core to explain the dissipation. An artist’s impression of the dwarf planet Eris (in the distance) and its...

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This Hubble image shows NGC 2210, a globular cluster located 163,000 light-years away in the constellation of Dorado. Also known as ESO 57-71 or LW 423, the cluster was first discovered on January 31, 1835 by the English astronomer John Herschel. The color image is made up of observations from Hubble’s Advanced Camera for Surveys (ACS) and Wide Field Camera 3 (WFC3) and in the ultraviolet, near-infrared, and optical parts of the spectrum. It is based on data obtained through three filters. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / A. Sarajedini / F. Niederhofer.

Hubble Observes Densely Packed Globular Cluster NGC 2210

Dec 4, 2023 by Enrico de Lazaro

A new image taken with the NASA/ESA Hubble Space Telescope provides a detailed look at NGC 2210, a globular cluster situated in the Large Magellanic Cloud. This...

An artist’s impression of the massive star-forming region, with the planet-forming disk XUE 1 in the foreground. Image credit: Maria Cristina Fortuna, www.mariacristinafortuna.com.

Webb Detects Various Molecules in Extremely Irradiated Protoplanetary Disk

Dec 1, 2023 by News Staff

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have detected abundant water, carbon monoxide, carbon dioxide, hydrogen cyanide and acetylene...

An artist’s impression of the giant exoplanet Kepler-1704b. Image credit: Sci-News.com.

Neptune-Mass Exoplanet around Ultracool Dwarf Star Challenges Current Theories of Planet Formation

Nov 30, 2023 by Natali Anderson

Current theories predict that low-mass stars should rarely host planets with masses exceeding that of Neptune (17 Earth masses). An artist’s impression...

The six planets in the HD 110067 system are all smaller than Neptune and revolve around their parent star in a very precise waltz: when the closest planet to the star makes three full revolutions around it, the second one makes exactly two during the same time; this is called a 3:2 resonance; the six planets form a resonant chain in pairs of 3:2, 3:2, 3:2, 4:3, and 4:3, resulting in the closest planet completing six orbits while the outer-most planet does one. Image credit: ESA / CC BY-SA 3.0 IGO.

Astronomers Discover Resonant System of Six Sub-Neptune Exoplanets around HD 110067

Nov 30, 2023 by Enrico de Lazaro

The bright nearby star HD 110067 hosts six transiting sub-Neptunes that follow a chain of resonant orbits, according to new research led by University...

Left: this image from the Multi Unit Spectroscopic Explorer (MUSE) on ESO’s Very Large Telescope shows the parent cloud LHA 120-N 180B in which the HH 1177 system was first observed. Center: this image shows the jets that accompany HH 1177; the top part of the jet is aimed slightly towards us and thus blueshifted; the bottom one is receding from us and thus redshifted. Right: this image from ALMA shows the rotating disk around the star, similarly with sides moving towards and away from us. Image credit: ESO / ALMA / NAOJ / NRAO / McLeod et al.

ALMA Spots Circumstellar Disk around Young Star in Large Magellanic Cloud

Nov 29, 2023 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have detected a rotating gaseous structure around an extragalactic massive young...

Flaring, active regions of the Sun are highlighted in this image combining observations from several telescopes. High-energy X-rays from NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) are shown in blue; low-energy X-rays from Japan’s Hinode spacecraft are green; and extreme ultraviolet light from NASA’s Solar Dynamics Observatory (SDO) is yellow and red. All three telescopes captured their solar images around the same time on April 29, 2015. Image credit: NASA / JPL-Caltech / GSFC / JAXA.

Solar Activity Likely to Peak in 2024, Astronomers Say

Nov 29, 2023 by News Staff

Sunspots have been observed for over four centuries and the magnetic nature of sunspot cycles has been known for about a century. However, some of its...

An artist’s impression of the five-planet system HD 108236. Image credit: Sci-News.com.

Even in ‘Pristine’ Planetary Systems, Planets Exhibit Bit of Tilt

Nov 28, 2023 by News Staff

Astronomers have long puzzled over why all of the planets in our Solar System have slightly slanted orbits around the Sun. But Yale University planetary...

Mothra is best described as a binary system with two supergiant stars, a hot one with temperature T ≈ 14,000 K, and a cooler one with T ≈ 5,000 K. Image credit: NASA / ESA / CSA / STScI / Jose M. Diego, IFCA / Jordan C.J. D’Silva, UWA / Anton M. Koekemoer, STScI / Jake Summers, ASU / Rogier Windhorst, ASU / Haojing Yan, University of Missouri.

Mothra: Astronomers Spot Monster Binary Star in Distant Universe

Nov 28, 2023 by Natali Anderson

Mothra is a system of two supergiant stars in one of the extremely magnified galaxies behind the lensing galaxy cluster MACS J0416.1-2403. Mothra is best...

This Webb image shows a Herbig-Haro object called HH 797. Image credit: NASA / ESA / CSA / Webb / T. Ray, Dublin Institute for Advanced Studies.

Webb Reveals Herbig-Haro Object in Unprecedented Detail

Nov 28, 2023 by Enrico de Lazaro

The NASA/ESA/CSA James Webb Space Telescope has captured a very detailed image of the Herbig-Haro object 797 (HH 797), which is located in the northern...

An artist’s rendition of the hot-Jupiter exoplanet TOI-1789b. Image credit: Sci-News.com.

Scientists Recreate Extraterrestrial Atmospheric Hazes in the Lab

Nov 27, 2023 by News Staff

The NASA/ESA/CSA James Webb Space Telescope has begun its scientific mission, which includes the atmospheric characterization of transiting exoplanets....

This Hubble image shows the galaxy cluster Abell 3192, which is associated both with a galaxy group 2.3 billion light-years away and with the X-ray luminous galaxy cluster MCS J0358.8-2955 around 5.4 billion light-years away. Image credit: NASA / ESA / Hubble / G. Smith / H. Ebeling / D. Coe.

Hubble Space Telescope Focuses on Abell 3192

Nov 27, 2023 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have taken a picture of Abell 3192, which comprises two independent galaxy systems — a foreground...

An artist’s illustration of the Amaterasu particle observed by a surface detector array of the Telescope Array experiment. Image credit: Osaka Metropolitan University / L-INSIGHT, Kyoto University / Ryuunosuke Takeshige.

Astrophysicists Detect Second Highest-Energy Cosmic Ray Ever

Nov 23, 2023 by News Staff

Astrophysicists using the Telescope Array experiment in Utah, the United States, have detected the second-highest extreme-energy cosmic ray. An artist’s...

This Webb image shows member galaxies of the galaxy cluster A2744-z7p9OD. Image credit: NASA / ESA / CSA / T. Morishita, IPAC / A. Pagan, STScI.

Astronomers Detect Nickel and Other Unexpected Elements in Early Star-Forming Galaxies

Nov 23, 2023 by News Staff

Ancient starburst galaxies that formed 2-3 billion years after the Big Bang are unusually hot and contain unexpected elements, like nickel, according to...

An artist’s impression of HR 6819, a close binary consisting of a stripped B-type star (background) and a rapidly rotating Be star (foreground). Image credit: ESO / L. Calçada.

Rare Be-Type Stars are in Fact Triple Stellar Systems, Astronomers Say

Nov 22, 2023 by News Staff

Be-type stars make up almost 20% of the B star population, and are rapidly rotating stars surrounded by a disk. Although these stars have been known for...

Rings of dust surrounding HL Tauri, with line patterns showing the orientation of polarized light. Image credit: NSF / AUI / NRAO / B. Saxton / Stephens et al.

ALMA Detects Dust Grains in Gaps of HL Tauri’s Protoplanetary Disk

Nov 21, 2023 by Enrico de Lazaro

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have captured a high-resolution image of HL Tauri, a young star in the constellation...

An estimated 500,000 stars shine in this image of Sagittarius C from Webb’s NIRCam instrument. Image credit: NASA / ESA / CSA / STScI / Samuel Crowe, University of Virginia.

Webb Spots Huge Cluster of Protostars in Milky Way’s Center: Sagittarius C

Nov 20, 2023 by Enrico de Lazaro

Sagittarius C lies approximately 300 light-years from Sagittarius A*, the 4.3-million-solar-mass black hole at the center of our Milky Way Galaxy. An estimated...

This Hubble image shows NGC 2814, an irregular galaxy some 85 million light-years away in the constellation of Ursa Major. Image credit: NASA / ESA / Hubble / C. Kilpatrick.

Hubble Sees Spectacular Irregular Galaxy

Nov 20, 2023 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has delivered an unrivalled snapshot of the irregular galaxy NGC 2814. This Hubble image shows NGC 2814, an irregular...

The artistic impression depicts the effect of GRB 221009A that provoked a significant disturbance in our planet’s ionosphere. Image credit: ESA / ATG Europe / CC BY-SA 3.0 IGO.

Powerful Gamma-Ray-Burst Caused Significant Disturbance in Earth’s Ionosphere, Astronomers Say

Nov 17, 2023 by News Staff

Using satellite observations, including from ESA’s International Gamma-Ray Astrophysics Laboratory (Integral) mission, and a new developed analytical...

An artist’s concept of the exoplanet LTT 1445Ac. Image credit: NASA / ESA / Leah Hustak, STScI.

Hubble Measures Size of Rocky Exoplanet LTT 1445Ac

Nov 16, 2023 by Natali Anderson

LTT 1445Ac, a terrestrial planet in the triple star system LTT 1445, is only 1.07 times the size of Earth, according to a paper to be published in the...

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