Science ❯ Astronomy

Neutron Stars

Magnetars Pulsars Black Holes Formation Properties Research Neutron Star Collisions Collisions Pulsation Behavior Evolution Classification Implications Cold Neutron Stars Dark Matter Jet Structure Density Gravitational Waves Observations Thermonuclear Explosions Vela Pulsar Massive Neutron Stars Millisecond Pulsar Heaviest Neutron Star Mass Gap Objects Neutron Star Mergers SN 1987A Supernova Supernova 1987A Jet Speed Measurement Matter Accretion Jet Detection Jet Tracking Jet Measurement Jet Comparison Jet Implications Jet Measurement Methods Nuclear Explosions ASKAP J1935+2148 Detection of Gravitational Wave Signal Element Formation Binary System Jet Formation Companion Stars Radio Bursts Radio Emissions Stellar Remnants Radio Signals Emission States Radio-Emitting Neutron Stars White Dwarfs

Webb Finds Lemon-Shaped Planet Circling a Pulsar With a Helium–Carbon Atmosphere

JWST spectra reveal a helium‑plus‑molecular‑carbon atmosphere that defies existing formation models.