Astronomy – Page 15 – SpaceNews

Direct images of HIP 99770 b

Wobbling Star Found In Gaia-Hipparcos Data Confirmed To Host An Exoplanet

by SpaceRef EditorApril 13, 2023July 15, 2024

The HERA radio telescope, located in Karoo in South Africa, consists of 350 dishes pointed upward to detect radio waves from the early universe. Credit: Dara Storer

How Different Were Galaxies In The Early Universe?

by SpaceRef EditorApril 13, 2023July 15, 2024

A photo of the huge elliptical galaxy M87 [left] is compared to its three-dimensional shape as gleaned from meticulous observations made with the Hubble and Keck telescopes [right]. Because the galaxy is too far away for astronomers to employ stereoscopic vision, they instead followed the motion of stars around the center of M87, like bees around a hive. This created a three-dimensional view of how stars are distributed within the galaxy. (Illustration by NASA, ESA, Joseph Olmsted/STScI, Frank Summers/STScI; Science by Chung-Pei Ma/UC Berkeley)

Viewing Elliptical Galaxy M87 In 3D Helps Determine Black Hole Mass At Its Core

by SpaceRef EditorApril 13, 2023July 15, 2024

A team of researchers, including an astronomer with NSF’s NOIRLab, has developed a new machine-learning technique to enhance the fidelity and sharpness of radio interferometry images. To demonstrate the power of their new approach, which is called PRIMO, the team created a new, high-fidelity version of the iconic Event Horizon Telescope's image of the supermassive black hole at the center of Messier 87, a giant elliptical galaxy located 55 million light-years from Earth. The image of the M87 supermassive black hole originally published by the EHT collaboration in 2019 (left); and a new image generated by the PRIMO algorithm using the same data set (right). Credit: L. Medeiros (Institute for Advanced Study), D. Psaltis (Georgia Tech), T. Lauer (NSF’s NOIRLab), and F. Ozel (Georgia Tech)

A Sharper Look at the First Image of a Black Hole

by SpaceRef EditorApril 13, 2023July 15, 2024

This image of the Hubble Ultra Deep Field was taken by the Near-Infrared Camera on NASA’s James Webb Space Telescope. The Webb image observes the field at depths comparable to Hubble – revealing galaxies of similar faintness – in just one-tenth as much observing time. It includes 1.8-micron light shown in blue, 2.1-micron light shown in green, 4.3-micron light shown in yellow, 4.6-micron light shown in orange, and 4.8-micron light shown in red (filters F182M, F210M, F430M, F460M, and F480M). Download the full resolution from the Space Telescope Science Institute. https://webbtelescope.org/contents/media/images/01GXE4A07MB2RG6GHDGF3CHHJ4 Credit: NASA, ESA, CSA, Joseph DePasquale (STScI), Christina Williams (U. of Arizona).

Webb Shows Areas Of New Star Formation And Galactic Evolution

by SpaceRef EditorApril 12, 2023July 15, 2024

MIT astronomers mapped the “disk winds” associated with the accretion disk around Hercules X-1, a system in which a neutron star is drawing material away from a sun-like star, represented as the teal sphere. The findings may offer clues to how supermassive black holes shape entire galaxies. Credit: Jose-Luis Olivares, MIT. Based on an image of Hercules X-1 by D. Klochkov, European Space Agency.

Scientists Map Gusty Winds In A Far-off Neutron Star System

by SpaceRef EditorApril 10, 2023July 15, 2024

Georgia State's CHARA array is an optical interferometer located on Mount Wilson, California CREDIT Georgia State University

Navigating The Cosmos With Georgia State’s CHARA Array

by SpaceRef EditorApril 10, 2023July 15, 2024

In this illustration of an ultra-luminous X-ray source, two rivers of hot gas are pulled onto the surface of a neutron star. Strong magnetic fields, shown in green, may change the interaction of matter and light near neutron stars’ surface, increasing how bright they can become. Credit: NASA/JPL-Caltech

NASA Study Helps Explain Limit-Breaking Ultra-Luminous X-Ray Sources

by SpaceRef EditorApril 9, 2023July 15, 2024

This image of the Crab Nebula combines data from NASA’s Imaging X-ray Polarimetry Explorer (IXPE) in magenta and NASA’s Chandra X-ray Observatory in dark purple. Credits: X-ray (IXPE: NASA), (Chandra: NASA/CXC/SAO) Image processing: NASA/CXC/SAO/K. Arcand & L. Frattare

Seeing The Crab Nebula Like Never Before

by SpaceRef EditorApril 8, 2023July 15, 2024

Cassiopeia A (Cas A) is a supernova remnant located about 11,000 light-years from Earth in the constellation Cassiopeia. It spans approximately 10 light-years. This new image uses data from Webb’s Mid-Infrared Instrument (MIRI) to reveal Cas A in a new light. Credits: NASA, ESA, CSA, D. D. Milisavljevic (Purdue), T. Temim (Princeton), I. De Looze (Ghent University). Image Processing: J. DePasquale (STScI).

Webb Reveals Never-Before-Seen Details in Cassiopeia A

by SpaceRef EditorApril 7, 2023July 15, 2024