Earth's radiation budget is a core process of the Earth-atmosphere system, closely linked to global climate and environmental ...

Optical proof of a tiny companion orbiting supergiant star Betelgeuse is hard to come by. Hubble just spotted new evidence.

Already recognized for its excellence and even adopted for operational weather forecasting, the European Space Agency's Arctic Weather Satellite has now fulfilled its most important role. This small ...

Observations using ALMA and JWST show multiple mechanisms fueling starbursts in massive early galaxies, indicating diverse formation pathways during the early Universe.

The interstellar object 3I/ATLAS was discovered on July 1, 2025. There is currently no evidence to suggest that it is anything other than a natural astrophysical object. However, given the small ...

The Center for Teaching & Learning (CTL) at CU Boulder offers free and confidential classroom observations for educators at all levels. Whether you’re a tenured professor, teaching professor, lecturer ...