Rapidly rotating neutron stars that emit highly focused beams of electromagnetic radiation. Observed as periodic pulses of energy as their beams sweep across the Earth.
Giant interstellar clouds of dust, hydrogen, helium, and other ionized gases where new solar systems and stars are born over millions of years of gravitational collapse.
Gravitational fields so intense that nothing—no particles or electromagnetic radiation—can escape from them. Space-time is warped infinitely at the singularity.
The final spectacular collapse of massive stars, seeding the surrounding space with heavy elements like gold, platinum, and iron necessary for the formation of planets and life.
Mysterious components making up 95% of the total universe. Dark matter binds galaxies together structurally, while dark energy accelerates the expansion of space-time itself.