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astronomy

Fireball

Space

Astronomers trace fireball in Earth's skies to space rock that made it

In an effort to learn more about near-Earth asteroids, astronomers have used telescopic surveys to find an image of a space rock that produced a 0.4-kiloton fireball over the Pacific Ocean

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Astronomy Photographer of the Year 2022

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Astronomy Photographer of the Year 2022

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An image of the Orion nebula taken by JWST

Space

JWST has caught hot stars destroying gas and dust in the Orion Nebula

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satellite beaming signals to Earth

Space

Huge satellite could outshine all stars and planets in the night sky

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The red supergiant Betelgeuse is the ninth brightest star in the night sky

Space

The star Betelgeuse has stopped dimming – but it's still acting weird

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NASA image release November 9, 2010 Using data from NASA's Fermi Gamma-ray Space Telescope, scientists have recently discovered a gigantic, mysterious structure in our galaxy. This never-before-seen feature looks like a pair of bubbles extending above and below our galaxy's center. But these enormous gamma-ray emitting lobes aren't immediately visible in the Fermi all-sky map. However, by processing the data, a group of scientists was able to bring these unexpected structures into sharp relief. Each lobe is 25,000 light-years tall and the whole structure may be only a few million years old. Within the bubbles, extremely energetic electrons are interacting with lower-energy light to create gamma rays, but right now, no one knows the source of these electrons. Are the bubbles remnants of a massive burst of star formation? Leftovers from an eruption by the supermassive black hole at our galaxy's center? Or or did these forces work in tandem to produce them? Scientists aren't sure yet, but the more they learn about this amazing structure, the better we'll understand the Milky Way. To learn more go to: http://www.nasa.gov/mission_pages/GLAST/news/new-structure.html NASA Goddard Space Flight Center enables NASA???s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA???s accomplishments by contributing compelling scientific knowledge to advance the Agency???s mission. Follow us on Twitter Join us on Facebook Credit: NASA/Goddard Space Flight Center Scientific Visualization Studio

Space

Gamma ray bursts could help unravel how fast the universe is expanding

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A radio telescope array

Space

Astronomers devise new way to observe traces of the first stars

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Red galaxy

Space

Red smudge seen by JWST could unlock chemistry of the early universe

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James Webb Space Telescope pictures: Your questions answered

Space

James Webb Space Telescope pictures: Your questions answered

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This side-by-side comparison shows observations of the Southern Ring Nebula in near-infrared light, at left, and mid-infrared light, at right, from NASA???s Webb Telescope. This scene was created by a white dwarf star ??? the remains of a star like our Sun after it shed its outer layers and stopped burning fuel though nuclear fusion. Those outer layers now form the ejected shells all along this view. In the Near-Infrared Camera (NIRCam) image, the white dwarf appears to the lower left of the bright, central star, partially hidden by a diffraction spike. The same star appears ??? but brighter, larger, and redder ??? in the Mid-Infrared Instrument (MIRI) image. This white dwarf star is cloaked in thick layers of dust, which make it appear larger. The brighter star in both images hasn???t yet shed its layers. It closely orbits the dimmer white dwarf, helping to distribute what it???s ejected. Over thousands of years and before it became a white dwarf, the star periodically ejected mass ??? the visible shells of material. As if on repeat, it contracted, heated up ??? and then, unable to push out more material, pulsated. Stellar material was sent in all directions ??? like a rotating sprinkler ??? and provided the ingredients for this asymmetrical landscape. Today, the white dwarf is heating up the gas in the inner regions ??? which appear blue at left and red at right. Both stars are lighting up the outer regions, shown in orange and blue, respectively. The images look very different because NIRCam and MIRI collect different wavelengths of light. NIRCam observes near-infrared light, which is closer to the visible wavelengths our eyes detect. MIRI goes farther into the infrared, picking up mid-infrared wavelengths. The second star more clearly appears in the MIRI image, because this instrument can see the gleaming dust around it, bringing it more clearly into view. The stars ??? and their layers of light ??? steal more attention in the NIRCam image, while dust pl

Space

James Webb Space Telescope releases dazzling first science images

Incredibly clear images of the Carina Nebula, the Eight-Burst Nebula, a galaxy cluster called Stephan’s Quintet and an exoplanet named WASP-96b make up the first set of science data from JWST

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Space

7 big questions the James Webb Space Telescope is about to answer

Features

Space

Stunning solar prominences shine in photography competition

Regulars

Space

How to catch a glimpse of a five-planet alignment this June

Regulars

Space

Astronomers question if the first picture of a black hole is accurate

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