Tag Archive for 'Gas giant'

An artist’s conception of the HR 858 planetary system. Image credit: Sci-News.com.

K2 Mission Discovers 366 New Exoplanet Candidates

Nov 24, 2021 by News Staff

Using photometric data from NASA’s Kepler/K2 mission, astronomers have identified 747 unique planet candidates and 57 multiplanet systems; of these candidates,...

This artist’s illustration depicts what Chu et al. think is happening in the binary system KPD 0005+5106. The data suggest the white dwarf (blue sphere) is blasting a companion object (brown and red object on right), which is either a low-mass star or planet, with waves of heat and radiation. The white dwarf is also pulling material from the companion into a disk around itself, which the artist shows in orange, before it slams into its north and south poles. This process is contributing to the destruction of the companion through powerful gravitational forces. Image credit: NASA / CXC / M. Weiss / ASIAA / Chu et al.

Hard X-Ray Emission from White Dwarfs Reveals Their Hidden Companions

Nov 23, 2021 by News Staff

Using NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton satellite, astronomers have investigated unusual X-ray activity in three white dwarfs:...

Hubble’s photo of Jupiter displays the ever-changing landscape of its turbulent atmosphere. Image credit: NASA / ESA / Hubble / Amy Simon, NASA’s Goddard Space Flight Center / Michael H. Wong, University of California, Berkeley / Joseph DePasquale, STScI.

Hubble Observes Solar System’s Giant Planets

Nov 19, 2021 by News Staff

Hubble’s snapshots of the outer Solar System’s planets — Jupiter, Saturn, Uranus, and Neptune — reveal both extreme and subtle changes...

An artist’s impression of the sub-Neptune TOI-2285b and its parent star. Image credit: Sci-News.com.

Temperate Sub-Neptune Found Orbiting Nearby Red Dwarf

Nov 1, 2021 by Natali Anderson

Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and several ground-based telescopes, astronomers have discovered and confirmed a...

This visible-light image of Jupiter was created from data captured on January 11, 2017 using Hubble’s Wide Field Camera 3. Near the top, a long brown feature called a ‘brown barge’ extends 72,000 km (nearly 45,000 miles) in the east-west direction. The Great Red Spot stands out prominently in the lower left, while the smaller feature nicknamed Red Spot Jr. (known to Jovian scientists as Oval BA) appears to its lower right. Image credit: NASA / ESA / NOIRLab / NSF / AURA / Wong et al. / de Pater et al. / M. Zamani.

Juno Provides New Information about Jupiter’s Enigmatic Atmospheric Features

Nov 1, 2021 by News Staff

Juno launched on August 5, 2011 and successfully entered Jupiter’s orbit on July 4, 2016. During each of the spacecraft’s 37 passes of Jupiter to date,...

An artist’s impression of the hot-Jupiter exoplanet HAT-P-68b and its parent star HAT-P-68 (also known as GSC 1925-01046 and 2MASS 07535598+2356176), a K5-type dwarf star with a mass of 0.68 solar masses and a radius of 0.67 solar radii. Image credit: Sci-News.com.

Astronomers Measure Amount of Carbon and Oxygen in Hot Jupiter’s Atmosphere

Oct 29, 2021 by News Staff

Using the Immersion GRating INfrared Spectrometer (IGRINS) at the Gemini South Observatory on Cerro Pachon, Chile, astronomers have measured carbon-to-hydrogen...

Super-Jupiter Found Circling Very Young, Very Low Mass Star

Oct 25, 2021 by Enrico de Lazaro

The discovery of a super-Jupiter exoplanet around the M-type dwarf star 2MASS J04372171+2651014 challenges models of planet formation by either core accretion...

An artist’s rendition of the MOA-2010-BLG-477Lb exoplanet and its white-dwarf host. Image credit: W.M. Keck Observatory / Adam Makarenko.

Jupiter-Mass Exoplanet Found Orbiting White Dwarf

Oct 15, 2021 by News Staff

Using a technique called gravitational microlensing, which occurs when a star close to Earth momentarily aligns with a more distant star, astronomers have...

This illustration shows a night-side view of the exoplanet WASP-76b. To the left of the image, we see the evening border of the exoplanet, where it transitions from day to night. Image credit: M. Kornmesser / ESO.

Ionized Calcium Detected in Exotic Atmosphere of WASP-76b

Oct 6, 2021 by News Staff

Using high-resolution spectra obtained with GRACES at the Gemini North Observatory, astronomers have detected ionized calcium in the atmosphere of the...

An artist’s rendition of the ultrahot Jupiter TOI-1518b and its parent star. Image credit: Sci-News.com.

New Ultrahot Jupiter Contains Iron in Its Atmosphere

Sep 28, 2021 by Natali Anderson

Astronomers have discovered a highly-irradiated gas giant exoplanet in close-in, highly misaligned orbit around a bright star called TOI-1518. An artist’s...

By analyzing images taken by Hubble between 2009 and 2020, Wong et al. found that the average wind speed just within the boundaries of the Great Red Spot, set off by the outer green circle, have increased by up to 8% and exceed 640 km per hour; in contrast, the winds near the storm’s innermost region, set off by a smaller green ring, are moving significantly more slowly; both move counterclockwise. Image credit: NASA / ESA / Michael H. Wong, University of California, Berkeley.

Hubble Measures Horizontal Winds in Jupiter’s Great Red Spot

Sep 28, 2021 by News Staff

Using data from the WFC3/UVIS instrument on board the NASA/ESA Hubble Space Telescope, a team of astronomers has measured the horizontal winds in Jupiter’s...

An illustration of Saturn and its ‘fuzzy’ core. Image credit: R. Hurt, IPAC / Caltech.

Saturn Has Diffuse, Stably Stratified Core, New Study Says

Aug 16, 2021 by News Staff

Astronomers using data from NASA’s Cassini spacecraft on ripples in Saturn’s rings have revealed new information about the gas giant’s mysterious...

Jupiter is shown in visible light for context underneath an artistic impression of the Jovian upper atmosphere’s infrared glow. The brightness of this upper atmosphere layer corresponds to temperatures, from hot to cold, in this order: white, yellow, bright red and lastly, dark red. The aurorae are the hottest regions and the image shows how heat may be carried by winds away from the aurora and cause planet-wide heating. Image credit: J. O’Donoghue, JAXA / Hubble / NASA / ESA / A. Simon / J. Schmidt.

Jupiter’s Powerful Polar Aurorae are Responsible for Upper-Atmospheric Heating, Study Shows

Aug 5, 2021 by News Staff

The upper atmosphere of Jupiter is hotter than expected from the amount of sunlight that it receives: the average temperature should be about minus 73...

Giant Exoplanet Orbits Its Host Star Once Every 1.1 Million Years

Aug 3, 2021 by Enrico de Lazaro

Astronomers with the COol Companions ON Ultrawide orbiTS (COCONUTS) program have directly imaged a massive exoplanet orbiting the low-mass red dwarf L...

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

Failed Hot Jupiter Found in Wide Orbit around Kepler-1704

Aug 2, 2021 by Natali Anderson

Astronomers from the Giant Outer Transiting Exoplanet Mass (GOT ’EM) Survey have discovered a long-period giant planet circling the 7.4-billion-year-old...

Artist's rendering of the planetary system HR 8799 at an early stage in its evolution, showing the planet HR 8799c, a disk of gas and dust, and interior planets (Dunlap Institute for Astronomy & Astrophysics / Mediafarm)

Astronomers Measure Rotation Speeds of Planets in HR 8799 System

Aug 2, 2021 by Enrico de Lazaro

Using the Keck Planet Imager and Characterizer (KPIC) on the Keck II telescope at the W.M. Keck Observatory, astronomers have obtained and analyzed the...

Jupiter’s X-ray aurorae. Image credit: ESA / NASA / Zhonghua Yao / William Dunn.

Planetary Scientists Solve Mystery of Jupiter’s X-Ray Auroral Flares

Jul 12, 2021 by News Staff

The rapidly rotating, strong magnetic field of Jupiter provides a natural lab that is key to understanding the dynamics of high-energy plasmas. Spectacular...

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

Inflated Hot Jupiter Found Orbiting TOI-1789

Jun 30, 2021 by Natali Anderson

Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) have discovered a transiting hot-Jupiter exoplanet around a slightly evolved star...

Two Giant Exoplanets Found around Sun-Like Star

Jun 11, 2021 by News Staff

Professional astronomers and citizen scientists from the NASA-funded Planet Hunters TESS project have discovered a two-planet system around the bright...

An artist’s rendering of the Neptune-like exoplanet TOI-1231b. Image credit: NASA / JPL-Caltech.

Neptune-Like Exoplanet Found Circling Nearby Red Dwarf

Jun 10, 2021 by Sergio Prostak

Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) have discovered a temperate, Neptune-sized planet orbiting the M-dwarf star TOI-1231. An...

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