News tagged with big bang

A burst of stars 13 billion years ago

(Phys.org) —The universe immediately following the big bang contained mostly hydrogen and some helium. All the other elements needed to make galaxies, planets, and life were formed in stellar interiors or related processes. ...

dateJun 03, 2013 in Astronomy
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Exploring the cosmic X-ray background

You are likely familiar with the cosmic microwave background. This background is a thermal remnant of the big bang. Because of the expansion of the universe, this remnant energy has a temperature of about 2.7 K, which means ...

dateSep 12, 2014 in Astronomy
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What is the universe expanding into?

Come on, admit it, you've had this question. "Since astronomers know that the Universe is expanding, what's it expanding into? What's outside of the Universe?" Ask any astronomer and you'll get an unsatisfying answer. We ...

dateNov 28, 2013 in Space Exploration
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