star

The students found a star from the beginning of the universe drifting in the Milky Way

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The students found a star from the beginning of the universe drifting in the Milky Way

A team of undergraduates from the University of Chicago has identified one of the oldest known stars in the universe using data from the Sloan Digital Sky Survey (SDSS). The star did not originate in our galaxy. Instead, it formed a ring of stars near it and later moved to the Milky Way. The discovery … Read more

Interstellar comet 3I/ATLAS may be 12 billion years old – so its old star system may no longer exist.

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3I/ATLAS travels through space in this black and white gif.

The asteroid that recently dominated the headlines, 3I/ATLAS, may be between 10 and 12 billion years old, a new analysis of the isotopic composition of the comet has shown. This so-called “invader” in our planetary system is only the third object reported to enter our cosmic environment from beyond. If these predictions of new comet … Read more