Library›Solar System & Beyond›One card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

ScienceOne small ahaPlanet order

Neptune · position among the eight planets, counting outward from the Sun

Think it. Then flip it. ahamoraTap to reveal Back to the cue
ScienceOne small aha
Your new aha8

Neptune's existence was predicted mathematically before its confirmed observation. Source: Neptune ↗

ahamoraReference ↗

Keep the thread going

One answer is a beginning.

Share a little curiosity, or follow it into the full collection.

Flip the full deck →

More from Solar System & Beyond

A few more worth knowing.

  1. 31Largest planet in our Solar SystemRECALL
    Jupiter

    More than twice as massive as all other planets combined

    Open this card ↗
  2. 32Hottest planet in our Solar SystemRECALL
    Venus

    Hotter than Mercury despite being farther from the Sun

    Open this card ↗
  3. 33Solar System planet with the Great Red SpotRECALL
    Jupiter

    The spot is a giant long-lived storm

    Open this card ↗