Astronomy News

Herschel Measures Thermal Properties of Uranian Moons

Composite image of Uranus. Image credit: Marcos van Dam / W. M. Keck Observatory.
Sep 17, 2020 by Enrico de Lazaro

Using data from the PACS photometer onboard ESA’s Herschel Space Observatory, astronomers have found that thermal properties of the five major moons of Uranus — Titania, Oberon, Umbriel, Ariel and Miranda — resemble those of dwarf planets Pluto and Haumea more than those of smaller trans-Neptunian objects and Centaur asteroids. Composite image of Uranus. Image credit: Marcos van Dam / W. M. Keck Observatory. “Actually, we carried out...

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An artist’s impression of the potential Jupiter-size planet WD 1856+534b and its much smaller host star, a dim white dwarf. Image credit: NASA’s Goddard Space Flight Center.

Astronomers Find Jupiter-Sized Exoplanet Orbiting White Dwarf

Sep 16, 2020 by News Staff

Using NASA’s Transiting Exoplanet Survey Satellite (TESS) and several ground-based telescopes, astronomers have discovered a Jupiter-sized planet orbiting...

This image shows the protoplanetary disc surrounding the young star HL Tauri. Image credit: ALMA / ESO / NAOJ / NRAO.

New Research Sheds Light on Evolution of Interstellar Gas Clouds

Sep 15, 2020 by News Staff

HL Tauri, a young star located 450 light-years away in the constellation of Taurus, is glowing at the center of an system of concentric protoplanetary...

An artist’s impression of the warm-Jupiter exoplanet TOI-1899b and the red dwarf TOI-1899, the lowest-mass star known to host a transiting warm Jupiter. Image credit: Sci-News.com.

Astronomers Find Warm Jupiter Orbiting Cool Red Dwarf

Sep 15, 2020 by News Staff

A puffy gas giant slightly larger than Jupiter has been discovered orbiting the early M-type dwarf star TOI-1899, thanks to new data from NASA’s Transiting...

A composite image of Venus as seen by JAXA’s Akatsuki spacecraft. Image credit: Institute of Space and Astronautical Science / Japan Aerospace Exploration Agency.

Astronomers Detect Biosignature Gas Phosphine in Atmosphere of Venus

Sep 14, 2020 by News Staff

Astronomers using the James Clerk Maxwell Telescope (JCMT) and the Atacama Large Millimeter/submillimeter Array (ALMA) have detected phosphine (PH3) gas...

An artist’s impression of the TOI-763 planetary system. Image credit: Sci-News.com.

Two Mini-Neptunes Found Orbiting Sun-Like Star

Sep 14, 2020 by Natali Anderson

Using NASA’s Transiting Exoplanet Survey Satellite (TESS) and the HARPS fiber-fed Echelle spectrograph mounted at the 3.6-m telescope of ESO’s La Silla...

This Hubble image shows NGC 2835, an intermediate spiral galaxy approximately 28.5 million light-years away in the constellation of Hydra. The color image was made from separate exposures taken in the ultraviolet, visible and near-infrared regions of the spectrum with Hubble’s Wide Field Camera 3 (WFC3). It is based on data obtained through five filters. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / J. Lee / PHANGS-HST Team / Judy Schmidt, www.geckzilla.com.

Hubble Sees Stunning Face-On Spiral Galaxy: NGC 2835

Sep 14, 2020 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have produced a spectacularly detailed image of NGC 2835, a face-on intermediate spiral galaxy with...

Carbide Planets May Be Made Of Silica and Diamonds

Sep 11, 2020 by News Staff

Extrasolar planets hosted by stars with sufficiently high carbon-to-oxygen ratios could be made of diamonds and silica, according to new research by Arizona...

This Hubble image shows the massive galaxy cluster MACSJ 1206. Embedded within the cluster are the distorted images of distant background galaxies, seen as arcs and smeared features. These distortions are caused by the dark matter in the cluster, whose gravity bends and magnifies the light from faraway galaxies, an effect called gravitational lensing. This phenomenon allows astronomers to study remote galaxies that would otherwise be too faint to see. Overlaid on the image are small-scale concentrations of dark matter, represented in this artist’s impression in blue. Dark matter is the invisible glue that keeps stars bound together inside a galaxy and makes up the bulk of the matter in the Universe. These blue halos reflect how the galaxy cluster’s dark matter is distributed, revealed by new results from Hubble. Image credit: NASA / ESA / Hubble / G. Caminha, University of Groningen / M. Meneghetti, Observatory of Astrophysics and Space Science of Bologna / P. Natarajan, Yale University / CLASH Team / M. Kornmesser.

New Observations Suggest Missing Ingredient in Current Dark Matter Theories

Sep 11, 2020 by News Staff

The large mass of a galaxy cluster deflects light from background objects, a phenomenon known as gravitational lensing. The large-scale gravitational lens...

SN LSQ14fmg exploded in SDSS J221646.15+152114.2, a star-forming galaxy 100 million light-years away. Image credit: Hsiao et al, doi: 10.3847/1538-4357/abaf4c.

Astronomers Observe Slowest Rising Type Ia Supernova Ever Seen

Sep 10, 2020 by News Staff

The exaggerated properties of a Type Ia supernova dubbed SN LSQ14fmg may help reveal the origin of the ‘super-Chandrasekhar’ group of supernovae it...

The NASA/ESA Hubble Space Telescope took this image of NGC 1052-DF2 on November 16, 2017. Image credit: NASA / ESA / P. van Dokkum, Yale University.

Self-Interacting Dark Matter Helps Explain Formation of Dark-Matter-Deficient Galaxies

Sep 10, 2020 by News Staff

The so-called self-interacting dark matter theory helps explain why NGC 1052-DF2 and NGC 1052-DF4, a pair of ultra-diffuse galaxies located approximately...

The Magellanic Stream in zenithal equal-area coordinates: (a) observed H I data for the Magellanic Stream, with the line-of-sight velocity indicated by the color scale and the relative gas column density indicated by the brightness; the points represent the sightlines with ultraviolet-absorption-line observations from the NASA/ESA Hubble Space Telescope, colored by their line-of-sight velocity; these points show the extent of the ionized gas associated with the stream; (b) the results of the model including the Magellanic Corona and the Milky Way’s hot corona; gas originating in the disks of the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC) is shown in the model, without separating neutral gas from ionized gas; this affects the morphology of the stream, causing the model to appear smoother and less fragmented than the data; however, the model reproduces the current spatial location and velocity of both clouds, and the velocity gradient of the gas along the stream; the Milky Way disk and background are extracted from real H I images. Image credit: Lucchini et al, doi: 10.1038/s41586-020-2663-4.

Huge Halo of Warm Gas around Magellanic Clouds is Key to Formation of Magellanic Stream

Sep 9, 2020 by News Staff

A team of astronomers from Australia and the United States has found that a halo of warm ionized gas surrounding the Large and Small Magellanic Clouds...

Wells et al estimate that there should be at least 10 -- currently undiscovered -- exoplanets which are favorably located to detect the Earth and are capable of sustaining life as we know it. Image credit: NASA.

Large-Scale SETI Survey of Vela Region Finds No Signs of Extraterrestrial Intelligence

Sep 8, 2020 by News Staff

Astronomers using the Murchison Widefield Array (MWA) radio telescope have searched for technosignatures — indicators of advanced extraterrestrial...

This Hubble image NGC 1805, a globular cluster located 163,000 light-years away in the constellation of Dorado. The color image is made up of observations from Hubble’s Wide Field Camera 3 (WFC3) in the ultraviolet, near-infrared, and optical parts of the spectrum. Four 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. Kalirai.

Hubble Sees Beautiful Globular Cluster: NGC 1805

Sep 7, 2020 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has captured the brilliance of a globular cluster called NGC 1805. This Hubble image NGC 1805, a globular cluster located...

This composite image shows both ALMA and SPHERE/VLT observations of the disk around GW Orionis. The ALMA image (blue) shows the disk’s ringed structure, with the innermost ring (part of which is visible as an oblong dot at the very center of the image) separated from the rest of the disk. The SPHERE observations (orange-red) allowed the astronomers to see for the first time the shadow of this innermost ring on the rest of the disk, which made it possible for them to reconstruct its warped shape. Image credit: ALMA / ESO / NAOJ / NRAO / ESO / University of Exeter / Kraus et al.

Astronomers Find Misaligned and Warped Protoplanetary Disk around Triple-Star System

Sep 3, 2020 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) and the SPHERE (Spectro-Polarimetric High-contrast Exoplanet Research) instrument...

An optical color image of the stellar field centered on HIP 109427, an A1-type star located 89 light-years away in the constellation of Pegasus, from the Pan-STARRS survey, showing the target fields of Green Bank and Parkes receivers, circled in red and white respectively; 46 sources with geometric distances calculated from Gaia data are marked with green crosses. Image credit: Wlodarczyk-Sroka et al, arXiv: 2006.09756.

New Study Expands Breakthrough Listen Initiative’s Search for Intelligent Life

Sep 3, 2020 by News Staff

In a new study to be published in the Monthly Notices of the Royal Astronomical Society, a research team led by University of Manchester astronomers extended...

An artist’s impression of binary black holes about to collide. Image credit: Mark Myers, ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav), Australian National University.

Astronomers Witness Birth of Intermediate-Mass Black Hole

Sep 2, 2020 by News Staff

Astronomers using the twin LIGO detectors located in Livingston, Louisiana, and Hanford, Washington, and the Virgo detector located near Pisa, Italy, have...

An artist’s impression of plasma jets coming from a supermassive black hole in the central galaxy of the Phoenix cluster. Image credit: NAOJ.

Astronomers Detect Black-Hole Jets in Central Galaxy of Phoenix Cluster

Sep 1, 2020 by Enrico de Lazaro

Astronomers using the Australia Telescope Compact Array (ATCA) have detected plasma jets coming from a supermassive black hole in the central galaxy of...

These images of comet C/2020 F3 (NEOWISE) were obtained with the Gemini North telescope on August 1, 2020. Image credit: Gemini Observatory / NOIRLab / NSF / AURA / M. Drahus / P. Guzik.

Astronomers See Spirals in Gaseous Coma of Comet NEOWISE

Aug 31, 2020 by News Staff

New images of comet NEOWISE (C/2020 F3) show rapidly expanding spiral features in its coma produced by the rotation of its 5-km (3-mile) wide nucleus. These...

An artist’s impression of the hot Neptune TOI-824b and its parent star TOI-824. Also known as SCR J1448-5735, TYC 8688-915-1, TIC 193641523 and 2MASS J14483982-5735175, the star is around 70% the size and mass of the Sun and is 10.9 billion years old. Image credit: Sci-News.com.

Rare Hot Neptune Found Orbiting Nearby Dwarf Star

Aug 31, 2020 by Natali Anderson

Using NASA’s Transiting Exoplanet Survey Satellite (TESS) and two ground-based instruments, astronomers have discovered and confirmed a transiting hot...

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