Physics/Astronomy: Astronomy, Astrophysics, & Planetary Science

An archive and source of scientific data from NASA planetary missions, astronomical observations, and laboratory measurements.

A series of online databases hosted by NIST containing physical constants, spectroscopy data, X-ray and gamma-ray data and more.

The primary archive for NASA missions dealing with extremely energetic phenomena, from black holes to the Big Bang.

The definitive reference manual to the global photographic coverage of the Moon, a reproduction of the 675 plates contained in NASA SP-206, written by Bowker and Hughes.

NASA has always told its story through its images, a few of which have become icons of human history.

SDSS-V is the first facility providing multi-epoch optical & IR spectroscopy across the entire sky.

Contains basic data, cross-identifications, measurements, and references to published works for astronomical objects outside the solar system.

It includes papers on physics, astronomy, math, computer science, quantitative biology and statistics..

Database of particle physics papers maintained at Stanford Linear Accelerator Center (SLAC).

Particle physics articles, pre-prints, books and proceedings papers, Mathematical Physics Pre-prints archive, 1991 to present.