Astronomy is the scientific study of celestial objects (such as stars, planets, comets, and galaxies) and phenomena that originate outside the Earth's atmosphere (such as the cosmic background radiation). It is concerned with the evolution, physics,...

Astrology (from Greek: ἄστρον (astron), "star", and λόγος (logos), "theory", "study": lit. study of the stars) is a group of systems, traditions, and beliefs in which knowledge of the relative positions of celestial bodies and related...

A player on the Houston Astros.

Astrobiology (from Greek: ἀστρο, astro, "constellation"; βίος, bios, "life"; and λόγος, logos, "knowledge") is the interdisciplinary study of life in space, combining aspects of astronomy, biology and geology.[2] It is focused primarily...

Astro (Navigation), Celestial Navigation. Positional Astronomy. Navigating by the stars.

Astrophysics is the branch of astronomy that deals with the physics of the universe, including the physical properties (luminosity, density, temperature, and chemical composition) of celestial objects such as stars, galaxies, and the interstellar...

Astro City, a comic book series.

Astrometry is the branch of astronomy that relates to precise measurements and explanations of the positions and movements of stars and other celestial bodies. Although once thought of as an esoteric field with little useful application for the future,...

Astro Boy, the American title for the Japanese animated series Tetsuwan Atomu.

Chevrolet Astro, a model of van.

Astrochemistry is the study of the chemical elements found in outer space, generally on larger scales than the Solar System, particularly in molecular gas clouds, and the study of their formation, interaction and destruction. As such, it represents an...

"Astro", a song by The White Stripes from their 1999 album The White Stripes

ASTRO, the Autonomous Space Transport Robotic Operations vehicle.

Astro (The Jetsons), a dog on the animated television series The Jetsons.

Astro Lounge, a 1999 album by rock band Smash Mouth.

Astro Chicken, a video game.

Astro-twin, an astrology term.

Astro (Motorola), used to describe the digital voice radios produced by Motorola

Astro-geodetic methods, a group of important methods in geodesy, satellite techniques and astrometry.

Astro-Gnome, an American automobile.

GMC Astro, a cabover tractor-trailer truck made by GMC from 1968-1988

Astro (band), a Japanese noise music project

Astro (satellite TV), a Malaysian subscription-based multi-channel satellite TV and radio service

Astro Nusantara, Indonesia subscription-based multi-channel TV service

Project names of astronomy satellites developed by ISAS (now JAXA) — ASTRO-A (Hinotori), ASTRO-B (Tenma), ASTRO-C (Ginga), ASTRO-D (ASCA), ASTRO-E and ASTRO-EII (Suzaku), ASTRO-F (Akari), ASTRO-G.

Astrodome, A sports venue in Houston, Texas. The first home of the Houston Astros.

The Houston Astros, a Major League Baseball team based in Houston, Texas

See also Astra, Astros.