Interstellar comet is making its closest approach to Earth this week

TL;DR

Interstellar comet 3I/Atlas is making its closest approach to Earth at 167 million miles.
The comet is estimated to be between 1,444 feet and 3.5 miles in size.
3I/Atlas originated in a star system outside of our own.
It is the third known interstellar object to pass through our solar system.
Scientists are studying the comet, with some speculating about its potential alien origins.
The comet will leave our solar system by the mid-2030s.

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