Supernovae Supermassive Black Holes Star Formation Black Holes X-ray Astronomy Fast Radio Bursts Radio Waves Supernova Remnants Magnetars Magnetic Fields Neutron Stars Charged Particles Radiation Accretion Disks Solar Wind X-ray Emissions Flares Transient Events Radio Signals Solar Activity Energy Emission Electromagnetic Radiation Galaxies Gamma-Ray Bursts Interstellar Visitors Interstellar Travel Cosmic Dark Ages Shock Waves Stellar Evolution Cometary Behavior Asteroids X-ray Emission High-Energy Emissions Cosmic Rays Cometary Studies Radio Emissions Dark Matter Stellar Winds Neutrino Astronomy Auroras Blazars Active Galactic Nuclei Particle Collisions Cosmic Flares Planetary Atmospheres Eclipses Early Universe Studies Light Years Radio Jets Protostars Mass Transfer Magnetized Stars Cosmic Radiation Black Hole Growth Celestial Jewelry Cosmic Microwave Background Radiation Orbital Mechanics Gravitational Effects Galaxy Mergers Planetary Nebulae Gas and Dust Explosions Planetary Disintegration Planetary Development Tidal Disruption Events Auroral Activity Radiation Effects Celestial Bodies Kilonovae Tidal Forces Galaxy Interactions Galaxy Collisions Binary Systems Solar Dynamics Extraterrestrial Objects Pulsar Behavior Gamma-Ray Astronomy Energy Discharges Electrostatic Discharge Dark Energy Meteoroids Pulsars Pulsars and Cosmic Objects Cosmic Events Comet Origins Energy Outbursts Space Travel Comets and Asteroids Optical Illusions Object Trajectories Gravitational Waves Star Mergers Natural vs. Artificial Objects Unusual Astronomical Objects Stellar Remnants Space Discoveries Celestial Mechanics Nebular Material Trajectory Analysis Comet Activity
Keck spectroscopy detected 13 heavy elements from a ~200-kilometer rocky body.