HEATKEYS

The NASA/IPAC Extragalactic Database (NED) provides a multi-wavelength fusion of data for millions of objects outside the Milky Way galaxy. The astrophysical objects covered in NED include galaxies, quasars and other active galactic nuclei (AGNs), g...

Astrophysics researcg=h to support astroparticle (gamma-ray and cosmic-ray), x-ray, gravitational-wave, observational cosmology, exoplanet and stellar astrophysics.

The Pennsylvania State University Department of Astronomy & Astrophysics is involved in a variety of observational, experimental and theoretical activities, covering almost the entire gamut of modern astronomy and astrophysics research.

Teach Astronomy is an astronomy learning tool, intended either as a supplement for classroom instruction or for informal learners wanting to know more about the subject. The major types of content can be explored with a keyword search and/or by using...