All articles starting with S
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Space Reactor‑1 Freedom
Space Reactor‑1 Freedom (SR‑1 Freedom) is a NASA mission, announced in March 2026, to fly the first fission reactor-powered spacecraft beyond Earth orbit toward Mars, carrying three helicopters.
Space Research and Technology Institute
The Space Research and Technology Institute (SRTI-BAS) is a Bulgarian Academy of Sciences research institute in Sofia known for Liulin dosimeters flown on the ExoMars Trace Gas Orbiter.
Space Research Institute (Russia)
Space Research Institute (IKI RAS, Институт космических исследований РАН), Russia's lead space-science institute, founded May 15, 1965 in Moscow; builds instruments for Spektr-RG, ExoMars, Luna 26, and foreign missions.
Space Rider
Space Rider is an uncrewed reusable spaceplane developed by the European Space Agency, planned to fly payloads to low Earth orbit and land them back on a runway, with a first launch in 2028.
Space rock
Space rock: a rock subgenre coined in the 1970s for Pink Floyd and Hawkwind, defined by long psychedelic passages, reverbed guitars, synthesizers, and space-themed lyrics; later revived by Spacemen 3 and Spiritualized.
Space Seed
Space Seed is a 1967 Star Trek: The Original Series episode, TOS season 1 episode 22, in which the Enterprise revives genetic tyrant Khan Noonien Singh from the Botany Bay and exiles him to Ceti Alpha V; it spawned Star Trek II: The Wrath of Khan.
Space shift keying
Space shift keying (SSK) is a MIMO digital modulation scheme that encodes data bits in the index of one activated transmit antenna, needing a single RF chain.
Space Shower Music Awards
The Space Shower Music Awards are annual Japanese music awards from Space Shower TV, begun in 1996 as a music video award and relaunched in 2016.
Space Shuttle
The Space Shuttle was NASA's reusable human spaceflight system, approved by President Nixon in 1972, whose five orbiters flew 135 missions from 1981 to 2011 before retirement.
Space Shuttle abort modes
Space Shuttle abort modes were pre-planned procedures for ending a mission early during launch or ascent, including four intact aborts for safe runway landings and contingency aborts for crew survival.
Space Shuttle Atlantis
Space Shuttle Atlantis was NASA's fourth space-qualified orbiter, flying 33 missions between 1985 and 2011, including the final Space Shuttle Program flight, and is now displayed in Florida.
Space Shuttle Challenger
Space Shuttle Challenger was NASA's second space-flown orbiter, flying ten missions from 1983 to 1986, when it broke apart after liftoff, killing all seven crew members.
Space Shuttle Challenger disaster
The Space Shuttle Challenger disaster was the breakup of the shuttle Challenger 73 seconds after liftoff on January 28, 1986, killing all seven crew members.
Space Shuttle Columbia
Space Shuttle Columbia, known by the alias Columbia shuttle, was the first NASA Space Shuttle orbiter to fly in space, completing 28 missions from 1981 to 2003.
Space Shuttle Columbia disaster
The Space Shuttle Columbia disaster was the destruction of the shuttle Columbia and its seven astronauts during reentry over Texas on February 1, 2003, caused by launch-time foam damage to the left wing.
Space Shuttle design process
The Space Shuttle design process was NASA's 1969 to 1972 conversion of the reusable-spacecraft idea into a final configuration: a winged orbiter, expendable external tank, and two solid rocket boosters.
Space Shuttle Discovery
Space Shuttle Discovery was a NASA orbiter that flew 39 missions between 1984 and 2011, more than any other shuttle, and deployed the Hubble Space Telescope.
Space Shuttle Endeavour
Space Shuttle Endeavour (OV-105) was NASA's fifth and final space shuttle orbiter, built as a replacement for Challenger and flown on 25 missions from 1992 to 2011, including the first Hubble servicing mission.
Space Shuttle Enterprise
Space Shuttle Enterprise (OV-101) was NASA's first orbiter, a prototype that never flew in space but proved the shuttle could land like an airplane in 1977.
Space Shuttle external tank
The Space Shuttle external tank, or ET, held liquid oxygen and liquid hydrogen for the orbiter's three main engines and was the only Shuttle component not recovered.
Space Shuttle orbiter
The Space Shuttle orbiter, also known as the STS Orbiter, was NASA's reusable winged spacecraft that carried crews and payloads into orbit, then landed unpowered on a runway.
Space Shuttle retirement
The retirement of the Space Shuttle ended NASA's 30-year reusable spaceplane program in 2011, after 135 missions, leaving the United States without its own crewed launch vehicle.
Space Shuttle Solid Rocket Booster
The Space Shuttle Solid Rocket Booster (SRB) was a pair of recoverable solid-fuel rockets designed to supply extra thrust during the orbiter's ascent.
Space Shuttle thermal protection system
The Space Shuttle thermal protection system, or TPS, was the reusable heat shield of reinforced carbon-carbon panels and nearly 31,000 silica tiles protecting the orbiter during reentry.
Space station
A space station is a crewed spacecraft in orbit around Earth serving as a long-duration laboratory, from Salyut 1 in 1971 to the International Space Station, inhabited continuously since 2000.
Space Station Freedom
Space Station Freedom, also known as the Space Station Freedom Program, was a NASA program announced in 1984 to build an Earth-orbiting space station, merged into the ISS in 1993.
Space suit
A space suit, or EVA suit, is a pressurized garment and life support system that lets astronauts survive and work in vacuum. NASA's Shuttle and station suit is the Extravehicular Mobility Unit.
Space sunshade
A space sunshade, or solar shade, is a proposed structure or spacecraft swarm between the Sun and Earth that would block sunlight to cool the planet.
Space sustainability
Space sustainability is the practice of keeping Earth's orbital environment usable for current and future missions by limiting debris, disposing of spacecraft, and coordinating traffic.
Space Sweepers
Space Sweepers is a 2021 South Korean science fiction space opera directed by Jo Sung-hee, starring Song Joong-ki and Kim Tae-ri, released on Netflix in February 2021.