Solar flare
Eruption of electromagnetic radiation.
25 cards
No account needed. By playing, you confirm you're 13 or older and agree to the Terms of use.
Solar flare
Eruption of electromagnetic radiation.
Nebula
Body of interstellar clouds.

Three-body problem
Physics problem related to laws of motion and gravity.
Great Oxidation Event
Paleoproterozoic surge in atmospheric oxygen.
Water distribution on Earth
Overview of the distribution of water on planet Earth.
Solar cycle 25
Solar activity from 2019 to about 2030.
Solar luminosity
Unit of light in stars and galaxies.
PSR J1748−2446ad
Pulsar in the constellation Sagittarius.
Moons of Haumea
Natural satellites orbiting Haumea.
Lee Archambault
American test pilot and NASA astronaut (born 1960).
Space Delta 10
U.S. Space Force doctrine and wargaming unit.
S1.5400
First staged combustion rocket engine ever developed, for the Soviet space program.
9 Ceti
Star in the constellation Cetus.
32 Eridani
Binary star in the constellation of Eridanus.
Iota Leonis
Star in the constellation Leo.
HD 69142
Star in the constellation Puppis.
NGC 441
Galaxy in the constellation of Sculptor.
NGC 5752
Galaxy in the constellation Boötes.

NGC 448
Lenticular galaxy in the constellation Cetus.
IRC 0218
Galaxy cluster in the constellation Cetus.
Star-forming regions of Vela
Star-forming regions in the constellation Vela.
3C 138
Quasar in the constellation Taurus.
Odin Planitia
Geologic basin on Mercury.

3428 Roberts
Main-belt asteroid.
Renate Brümmer
Swiss-born German meteorological scientist and astronaut.