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cosmology

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A distant supernova defies our understanding of the cosmos’s expansion

The two main methods of measuring the expansion of the universe have always disagreed, and observations of a supernova found in 2014 have thrown another wrench in the works

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A distant supernova defies our understanding of the cosmos’s expansion

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To create a wormhole that doesn't collapse, you need exotic matter

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CE8NB6 Illustration showing galaxy giant whirlpool in space galaxy's effect on space image shows how gravity galaxy warps local

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What was the universe's first second like? These particles can tell us

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HA6GE7 departmentofenergy 8056998030 The Daya Bay Antineutrino Detector
Mandatory Credit: Photo by Lawrence Jackson/AP/Shutterstock (6360330b) Stephen Hawking Professor Stephen Hawking of the University of Cambridge, makes remarks at an event marking the 50th anniversary of NASA,at George Washington University in Washington Hawking NASA, Washington, USA

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Stephen Hawking’s parting shot is a fresh challenge to cosmologists

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Stephen Hawking with Thomas Hertog, in Hawking's office

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Stephen Hawking's final theorem turns time and causality inside out

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Neil Turok mirror universe

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Neil Turok on the case for a parallel universe going backwards in time

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2B77TB8 3D rendering of abstract digital waves and bright square particles in space. Futuristic background made of dots, particles and mesh

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A miniature universe shows particles may emerge out of empty space

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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

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

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James Webb Space Telescope’s first deep-field image is stunning

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James Webb Space Telescope’s first deep-field image is stunning

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The universe is surprisingly lopsided and we don't know why

Two analyses of a million galaxies show that their distribution may not be symmetrical, which may mean that our understandings of gravity and the early universe are incorrect

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The Sculptor Galaxy

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Will time ever end? The answer lies in the death throes of the cosmos

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Cosmic dawn ended 200 million years later than cosmologists thought

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Have we been measuring the expansion of the universe wrong all along?

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Controversial claim that the universe is skewed could upend cosmology

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