Science ❯Astronomy

Solar System

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

New Distant Sednoid ‘Ammonite’ Casts Doubt on Planet Nine Hypothesis

Its highly eccentric orbit, confirmed through archival and telescopic data, undermines evidence for a shepherding ninth planet.

Stories older than 24h

Mercury to Station Retrograde in Leo From July 18 to August 11

Astronomers Launch Global Observations of Interstellar Comet 3I/ATLAS

NASA Unveils High-Definition Images of Solar Eruptions from Parker Probe

Global Telescopes Capture Active Coma of Interstellar Comet 3I/ATLAS

Astronomers Solicit Observations to Confirm Possible First Impact on Saturn

Active Interstellar Comet 3I/ATLAS Set for Safe Solar System Passage

Lucy Spacecraft Delivers First Full High-Resolution Images of Asteroid Donaldjohanson

Interstellar Comet 3I/ATLAS Enters Inner Solar System

Experimental Fusion and Solar Sail Concepts Aim to Reach Sedna in Under a Decade

Oort Cloud’s Largest Known Comet Unleashes High-Speed Carbon Monoxide Jets

Solar Orbiter Captures First Images of Sun’s South Pole

ESA’s Solar Orbiter Captures First Images of Sun’s South Pole

Planetarium Show Reveals Spiral Structure in Oort Cloud

June Skywatch: Strawberry Moon and Planet Pairings Highlight Solstice Month

New Dwarf Planet Discovery Challenges Planet Nine Despite 40% Simulated Odds

Geomagnetic Storm Keeps Aurora Borealis Glowing Over Northern U.S. Wednesday Night

New Dwarf Planet 2017 OF201 Undermines Case for Planet Nine

Researchers Warn Venus Co-Orbital Asteroids Could Endanger Earth

Study Reveals Jupiter’s Early Size and Magnetic Power