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Spectroscopy

Spectral Analysis James Webb Space Telescope Spectral Energy Distribution Comet Composition Ultraviolet Observations Exoplanet Studies Spectral Sensitivity Chemical Signatures 3D Spectroscopy Techniques Elemental Analysis Narrow-line Galaxies Cometary Composition Spectral Diversity Chemical Composition Emission Features Flash-Ionised Emission Features Broad-Line Emission Near-Infrared Echellette Spectrometer Light Analysis Radio Recombination Lines High-Resolution Spectroscopy Multi-Wavelength Observations Gas Dynamics JWST/NIRSpec Spectroscopy Surface Composition Multi-object Spectrograph C18O and C17O Lines Near-Infrared Spectroscopy Emission Lines Luminosity Ultraviolet Spectroscopy Near-Infrared Spectra Neural Networks Ultraviolet Spectra DESI DR1 Data Mid-Infrared Spectroscopy Elemental Composition

JWST Spectra Show Little Red Dots Are Largely Broad‑Line, Black Hole Sources

New June 9 studies find a tight Hα-to-bolometric scaling that requires nearly filled broad-line regions to explain the extreme emission and points to rapid, obscured black‑hole growth.

JWST Spots Sulfur in HR 8799 c, Strengthening Case for Core Accretion

New Spectrograph Reveals Mars-Mass Iron Bar in the Ring Nebula

JWST Reveals Nine Distant ‘Platypus’ Galaxies With Star-Like Profiles and Galaxy-Like Spectra

Ancient White Dwarf Caught Accreting Debris From a Shattered Rocky World

Comet Lemmon Makes Closest Approach Oct. 20–21 With Prime Viewing Under New Moon

Hubble Spots White Dwarf Devouring Icy, Nitrogen-Rich Exo‑Pluto Fragment

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