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Spectroscopy

Keck Observatory James Webb Space Telescope Chemical Analysis WEAVE Spectrograph Chemical Composition Data Analysis 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 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