2 A B C D E F G H J K L M N O P R S T Y

H3 Rocket

H3 Launch Vehicle The H3 Launch Vehicle is an medium lift expendable launch system being developed by Mitsubishi in cooperation with JAXA.  The H3 is an advanced liquid-propellant rockets with strap-on solid rocket boosters and are planned to be launched from...

Heliophysics

The study of the sun and its interaction with Earth and the solar system is called Heliophysics and allows us to understand solar wind and space weather. It requires viewing the sun, heliosphere, and planetary environments as elements of a single interconnected system...

Highly Elliptical Orbit

A highly elliptical orbit (HEO) is an elliptic orbit with high eccentricity, usually referring to one around Earth. Examples of inclined HEO orbits include Molniya orbits, named after the Molniya Soviet communication...

HTV spacecraft

The H-II Transfer Vehicle (HTV)Kounotori (こうのとり, Kōnotori, “Oriental stork” or “white stork”), is built and developed in Japan.  The HTV is an unmanned cargo transfer spacecraft that...

Hubble Space Telescope

On April 25, 1990, NASA deployed the Hubble Space Telescope, named after Edwin Powell Hubble.  It was placed into orbit by crew members of the space shuttle Discovery after launching on April 24, 1990. The large reflecting telescope was the most sophisticated...