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Solar System

Sun Planets Solar Eclipses Solar Eclipse Oort Cloud Planetary Formation Asteroids Eclipses Solar Phenomena Solar Activity

NASA Chief Backs Revisiting Pluto’s Planet Status

Any change depends on the astronomy union’s consensus process.

Comet Pan‑STARRS Reaches Perihelion Sunday, Closing a Brief Pre‑Dawn Viewing Window

Lab Experiments Recreate Mercury Magma to Show Sulfur Lowers Crystallization Temperatures

Rare Comet Pan‑STARRS Now Glows Before Dawn for a Short Northern Viewing Window

NASA Chief Responds to 10-Year-Old’s Pluto Plea With “We Are Looking Into This”

Rubin Observatory Logs 11,000 New Asteroids in Early Data Sweep

Rubin Observatory Unveils 11,000 Newly Discovered Asteroids

Comet MAPS Skims the Sun on Saturday With Fate Uncertain

Earth Formed Entirely from Inner Solar System Material, Study Finds

Sungrazer Comet MAPS Faces Make-or-Break Sun Brush April 4–5

Hubble Spots First Known Comet Spin Reversal

Hayabusa2’s Ryugu Samples Confirm All Five DNA/RNA Bases, Pointing to Space-Born Formation Clues

Hubble Accidentally Captures Comet C/2025 K1 Breaking Into Pieces in Rare Real-Time View

Aurora Forecast Points to Northern Lights Over Nearly 20 U.S. States Tonight

Ryugu Samples Contain All Five DNA and RNA Bases, Peer-Reviewed Study Finds

Six-Planet ‘Parade’ Peaks Tonight in Brief Twilight Window

JWST Charts Uranus’s Upper Atmosphere in 3D, Exposing Auroral Bands and a Cooling Trend

Sun Registers First Spotless Days Since 2022 as New Sunspots Reappear

Chandra Maps Hot Astrosphere Around Young Sun-Like Star HD 61005

New Simulations Show Gravitational Collapse Can Build Kuiper Belt 'Snowman' Worlds