Optical astronomy is the research area focused on observing and analyzing electromagnetic radiation in the optical band, typically encompassing near-ultraviolet, visible, and near-infrared wavelengths accessible to ground- and space-based telescopes using optical elements and detectors. It employs instruments such as imaging cameras, spectrographs, and polarimeters on refracting or reflecting telescopes to study the photometric, spectroscopic, and polarimetric properties of astronomical sources. The field addresses topics including stellar and galactic structure, interstellar medium characterization, planetary systems, and cosmological parameters, and it relies on advanced techniques in adaptive optics, precision calibration, and data reduction to mitigate atmospheric and instrumental effects.
Astronomers have created a galactic masterpiece: an ultra-detailed image that reveals previously unseen features in the Sculptor galaxy. Using the European Southern Observatory's Very Large Telescope (ESO's VLT), they observed ...
Astronomy
Jun 18, 2025
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The European Space Agency's (ESA) newest planetary defender has opened its "eye" to the cosmos for the first time. The Flyeye telescope's 'first light' marks the beginning of a new chapter in how we scan the skies for new ...
Planetary Sciences
Jun 5, 2025
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On 23 June 2025, the world will get a look at the first images from one of the most powerful telescopes ever built: the Vera C. Rubin Observatory.
Astronomy
Jun 5, 2025
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A group of astronomers from across the globe, including a team from the University of Washington and led by Queen's University Belfast, have revealed new research showing that millions of new solar system objects will be ...
Astronomy
Jun 4, 2025
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Astronomers from the Yunnan University in China and other institutions have carried out photometric and spectroscopic observations of a recently detected supernova designated SN 2024aecx. Results of the observational campaign, ...
The satellite population in low Earth orbit (LEO) is not an open book. While data on many satellites is public, others are shrouded in secrecy, and information is incomplete for others. New research shows how observers can ...
Astronomy
May 20, 2025
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California stargazers will soon be able to witness a dazzling celestial sight composed of billions of stars.
Astronomy
May 19, 2025
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Researchers have developed a new coronagraph—an optical device that blocks out light from a bright source—that could make it possible to see distant exoplanets obscured by light from their parent stars. The new device could ...
Astronomy
Apr 21, 2025
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High up on the top of Cerro Pachón in northern Chile, NSF–DOE Vera C. Rubin Observatory is nearing completion. At the heart of the facility, a pivotal moment in the project's scientific adventure is unfolding. After more ...
Astronomy
Apr 14, 2025
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The Extremely Large Telescope (ELT), currently under construction in northern Chile, will give us a better view of the Milky Way than any ground-based telescope before it. It's difficult to overstate how transformative it ...
Astronomy
Mar 21, 2025
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