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Brown dwarfs are substellar objects that have more mass than the biggest gas giant planets, but less than the least massive main-sequence stars. Their...

Percival Lowell (/ˈloʊəl/; March 13, 1855 – November 12, 1916) was an American businessman, author, mathematician, and astronomer who fueled speculation...

Theta Eridani, Latinized from θ Eridani, is a binary system in the constellation of Eridanus with a combined apparent magnitude of 2.88. Its two components...

Air-launch-to-orbit (ALTO) is the method of launching smaller rockets at altitude from a heavier conventional horizontal-takeoff aircraft, to carry satellites...

Persona is a class of Russian reconnaissance satellites, derived from the Resurs DK class of remote sensing satellite, in turn derived from the Soviet...

Marguerite Laugier (née Lhomme) (12 September 1896 – 10 June 1976) was a French astronomer active at the Nice Observatory from the 1930s to the 1950s....

RADOM is a Bulgarian Liulin-type instruments-type spectrometry-dosimetry instrument, designed to precisely measure cosmic radiation around the Moon. It...