cosmic
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Space & Cosmos
Innovative model offers new way for astronomers to analyze powerful cosmic explosions
The explosion of a massive star leads to the ejection of its outer shell, and this “ejecta” expands outward over time and interacts with the star’s surrounding medium upon its death. This interaction creates two shock waves and a contact discontinuity (collectively known as a “shell”) that dissipates kinetic energy in exchange for producing more light. Eric Coughlin’s new model…
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Space & Cosmos
New cosmic distance catalogue may shed light on mysteries of the universe’s formation
The William Herschel Telescope, La Palma, Spain. Courtesy of the PAUS team. A new catalog was published today that provides information on millions of distant galaxies, determining their distances with unprecedented precision, across fields and depths never before explored. The catalogue is the product of the Accelerated Astrophysics Survey (PAUS), an international collaboration project led by the Institute for Space…
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Space & Cosmos
As a result of a cosmic upheaval, a new star is about to be born in the sky
Anthony R. Wood, The Philadelphia Inquirer Credit: Unsplash/CC0 Public Domain Astrophysicists say that any moment now, a new star as bright as Polaris will appear in the night sky — the result of a cosmic explosion that happened thousands of years ago in a distant constellation. NASA scientist Rebecca Hounsell calls it a “once-in-a-lifetime event that will spawn many new…
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