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Abstract: We present Hubble Space Telescope imaging and spectroscopy of HD 217411, a G3 V star associated with the extreme ultraviolet (UV) excess source (EUV 2RE J2300­­–07.0). This star is revealed ...

The team at the National Institute of Standards and Technology publishes measurement data crucial for advanced research in ...

A groundbreaking telescope might soon detect signs of extraterrestrial life. The Extremely Large Telescope (ELT), currently ...

Astronomers may have uncovered a hidden population of galaxies that could rewrite what we know about the universe's evolution. These faint, dusty galaxies were discovered using the deepest ...

The most distant and earliest "dead" massive galaxy ever seen shows some galaxies lived fast and died young shortly after the ...

For a long time, scientists thought that only actively star-forming galaxies should be observed in the very early Universe. The James Webb space telescope now reveals that galaxies stopped forming ...

Optical spectroscopy techniques are used in physics, astronomy, chemistry, biology, and associated research fields.

This book, which is based on a third-year undergraduate course taught by the author at University College London, presents the basic atomic and molecular physics necessary to understand and interpret ...

Up until recently, astronomy was reliant entirely on electromagnetic waves. While that changed with the confirmation of ...

using data from China’s Large Sky Area Multi-Object Fiber Spectroscopy Telescope and European Space Agency’s Gaia space observatory. Published as a cover story in Science on Friday ...

SPHEREx stands for the Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer.