moon-stages

Moon Stages

SUN EARTH NEAR ORBIT ANGLE: 0° PHASE: — LIT: — SPEED: 0.5× 1× 2× 4× Home › Moon Stages Complete Lunar Cycle Reference Moon Stages:All 8 Phases Explained Every moon you have ever seen belongs to one of eight distinct…

cosmic-background-radiation

Cosmic Background Radiation

Cosmic BackgroundRadiation RA 00h 42m 44sDEC +41° 16′ 09″EPOCH J2000.0 GAIN: AUTOEXP: 1/500sFILTER: VIS z = 0.000D_L = 0 Mpc 13.8 GYRΛCDM MODELΩb = 0.0486 OLDEST LIGHT IN THE UNIVERSE 380,000 years after the Big Bang // T = 2.725…

waxing-vs-waning-moon

Waxing vs Waning Moon

Waxing vs Waning Moon: The Complete Guide Two halves of one 29.5-day cycle, but they couldn’t be more different. The waxing moon is the evening specialist — expanding light, high-contrast craters, visible at dusk. The waning moon is the dawn…

white-dwarf

White Dwarf

Stellar Evolution What is a White Dwarf The collapsed core of a dead star — city-sized, Sun-massed, and cooling for trillions of years. Click any stage to explore — the White Dwarf stage reveals the full interactive deep-dive. Nebula Main…

what-is-a-quasar

What is a Quasar

QUASAR Active Galactic Nucleus // Supermassive Black Hole Engine LIVE SIM AGN CORE // RELATIVISTIC JET ACTIVE z = 2.09 // d = 17.2 Gly DOPPLER BOOSTING — APPROACHING SIDE Tinner = 10⁷ K Black Hole Mass ← drag to…

van-allen-belt

What is the Van Allen Belt

Earth’s Magnetosphere // Interactive Cross-Section Van Allen Belt Two concentric shells of charged particles trapped by Earth’s magnetic field. Press a zone button to navigate orbital regions and observe particle density in real time. Cross-section — equatorial plane Altitude 500…