The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Black holes that have been obscured by clouds of dust still emit infrared light, enabling astronomers to spot them for the ...

Astronomers have debated for years whether these planets ... These wavelengths are less affected by scattering from aerosols.

Mysterious little red dots threatened to overhaul modern cosmology—but new research may have solved the celestial conundrum.

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

Breakthrough Listen, one of Yuri Milner’s Breakthrough Initiatives, is investigating a signal known as Breakthrough Listen ...

It's complicated. Radio astronomers have been competing for years for a frequency spectrum, they have this national and international relations about who gets what frequencies on the radio ...

the energy spectrum drops steeply from about one teraelectronvolt. This is also confirmed by models that study the particles accelerated by astronomical sources and their diffusion through the ...

Californians watching the sky in February have the chance to view a parade of planets and a snow moon. The planetary alignment that began in January will continue into February, according to ...

Igniting Minds, One Star at a Time! The SETI Institute’s Astronomy Activation Ambassadors (AAA) program is one of more than 30 education projects funded by NASA’s Science Mission Directorate for ...

The NASA AAA program currently also offers an Astronomy Academy for teacher professional development with virtual and in-person opportunities. Educators and administrators can register to receive ...

However, astronomers are coming up with ways to locate them. The clouds around obscured black holes still emit some light — just in infrared, rather than in the visible spectrum. In the new ...