1I/'Oumuamua

First confirmed interstellar object, small and strangely elongated, sped up mysteriously as it left.

What it is

Interstellar visitor: Passing through from another star, never to return. Every kind of thing there is →

Can you see it?

No. No telescope on Earth will show you this one; it is here to be understood, not seen. It is here because it is worth knowing about — and because leaving it out would make the sky look emptier than it is.

Worth knowing about 1I/'Oumuamua

1I/'Oumuamua is small and strangely elongated, like a cigar or a pancake.

What makes it worth knowing: No visible tail like a comet, yet it sped up slightly as it left -- a puzzle scientists still debate.

The numbers

Across	0 km
Found in	2017

What it belongs to

☀️ Everything the Sun holds, in one place

Then go outside

Not this one. But the sky over your head is full of ones you can see, and the Planetarium knows which.

🌙 Plan an evening outside 🌌 Everything else in the sky