Science ❯ Astronomy

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Study Says Venus Likely Swallowed a Moon

Computer models show Venus’s very slow spin would pull a satellite inward, creating a testable explanation for the planet’s lack of a moon.

BepiColombo Drops Propulsion Module and Begins Final Approach to Mercury

A Full Month of Sky Events to Watch in September 2026

Two Decades After Its Demotion, Pluto Is Still a Dwarf Planet

Six Planets Visible Along the Ecliptic Before Sunrise

Six Planets Set to Parade Across the Pre-Dawn Eastern Sky

Crescent Moon Rises Beside Mars in Predawn Sky on Aug. 9

Moon Joins Mars, Saturn and Uranus in Dawn Conjunction

Mars and Uranus Make an Unusually Tight Predawn Pairing

Thin Crescent Moon Lines Up With Venus, Mercury and Jupiter Over Brazil

Venus and Jupiter Make a Bright 'Cosmic Kiss' in Low Evening Sky

Venus and Jupiter Form Bright Double Evening Star Over Western Sky

Venus and Jupiter Will Reach a Tight Conjunction on June 9

Venus and Jupiter Close to a 1.6° Conjunction in Early June Twilight

Tonight: Crescent Moon Sits Between Venus and Jupiter in the Western Twilight

Predawn ‘Cosmic Triangle’ Briefly Brought Mars, Saturn and a Crescent Moon Together

Four-Planet Pre-Dawn Parade Peaks Worldwide April 18–20

Four-Planet Dawn Lineup Peaks Saturday With Mercury, Mars, Saturn and Neptune

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

Six-Planet Parade Lines Up Along the Ecliptic as Jupiter Shines Brightest