exist

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

Do multiverses exist? An astrologer explains why it depends on how you define ‘truth’.

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Do multiverses exist? An astrologer explains why it depends on how you define 'truth'.

Curious Kids is a series for children of all ages. If you have a question you want an expert to answer, send it to CuriousKidsUS@theconversation.com. Do multiverses exist? If so, what do they look like? How do you get there without wasting time? – Emily, age 9, Pune, Maharashtra, India The concept of multiverse – … Read more