Interstellar visitor 3I/ATLAS might be oldest comet yet seen

That small moving dot is our new interstellar visitor, Comet 3I/ATLAS. A new study said it might be 7 billion years old, or 3 billion years older than our own solar system. Image via ESO/ O. Hainaut.

• Interstellar comet 3I/ATLAS is speeding toward the sun and through our solar system. It’s only the 3rd interstellar visitor we’ve spotted in our neighborhood.
• The interstellar comet might be 7 billion years old, or 3 billion years older than our own solar system, said astronomers from the University of Oxford.