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Planetary Science

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Ammonite: Newly Discovered Sednoid Expands Orbital Diversity and Narrows Planet Nine Search

The finding sets tighter limits on models of outer Solar System dynamics by revealing previously unseen variations among Sednoid orbits

Astronomers Observe First Solid Condensation of Rocky Planet Precursors Around Distant Star

First Solids of Planet Formation Observed Around Young Star HOPS-315

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Chandra Observations Reveal Rapid Atmospheric Loss on Exoplanet TOI 1227b

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

54-Pound Martian Meteorite Sells for Record $5.3 Million at Sotheby’s Auction

White House Budget Plan Could Cut Short New Horizons’ Kuiper Belt Exploration

Study Finds Uranus Emits 12.5% More Heat Than It Absorbs

Combined ALMA and Gaia Data Reveal Hidden Gas Giant in MP Mus’s Protoplanetary Disk

UK Proposes VERVE CubeSat to Sample Signs of Life in Venus’s Clouds

DART Ejecta Analysis Reveals Boulder Clusters Could Tilt Dimorphos’s Orbit

Chang’e-6 Samples Reveal 4 Billion-Year Impact and Extended Volcanism on Moon’s Far Side

Astronomers Solicit Observations to Confirm Possible First Impact on Saturn

Moon Passes Within Half-Degree of Antares in Tonight’s Sky

Largest Martian Meteorite Goes on View in New York Ahead of $4 Million Auction

Three Record-Short Days Ahead as Earth’s Spin Accelerates

Earth’s Aphelion and Mercury’s Greatest Elongation Usher in July’s Night Sky Highlights

Weather Satellites Reveal Decade of Venus Cloud-Top Temperature Variations

James Webb Space Telescope Captures First Exoplanet by Direct Imaging

Curiosity Rover Uncovers Spiderweb-Like Boxwork Ridges Indicating Ancient Groundwater