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Spectroscopy

Keck Observatory James Webb Space Telescope Chemical Analysis Broadband Spectral Modeling WEAVE Spectrograph Chemical Composition Data Analysis Quasars Data Reduction Techniques Infrared Spectroscopy Integral Field Unit Data Photometric Analysis Planetary Atmospheres H-alpha Spectroscopy Infrared Observations JWST X-Shooter Spectrograph Spatially Resolved Spectroscopy Integral Field Spectroscopy Photometric Monitoring Ultraviolet Spectroscopy Eclipse Mapping

Ancient White Dwarf Caught Accreting Debris From a Shattered Rocky World

The finding points to delayed instability that can revive planetary activity billions of years after a star’s death.

JWST Delivers First 3D Map of an Exoplanet's Atmosphere

3-Billion-Year-Old White Dwarf Is Actively Devouring Rocky Debris, Study Finds

VLT Spectra Reveal Gas Ring Around V Sagittae, Hinting at Likely Nova in Coming Years

New Spectra Show 3I/ATLAS Is a Carbon‑Chain–Depleted Interstellar Comet With Weak CN Emission