Space – MCQ – GK Questions

The Great Attractor lies in the direction of the Centaurus Cluster (~150-250 Mly away), influencing motion of the Local Group within the Laniakea Supercluster.

NASA's Magellan orbiter (1990-1994) used synthetic aperture radar to map 98% of Venus's surface, revealing volcanic plains, tectonic features, and impact craters.

EGNOS (European Geostationary Navigation Overlay Service) improves GPS precision and integrity for European aviation, similar to WAAS (USA), MSAS (Japan), and GAGAN (India).

Sun-like stars spend ~10 billion years fusing hydrogen. The Sun is currently ~4.6 billion years old, halfway through its main sequence phase.

INSAT-3D and INSAT-3DR provide high-frequency meteorological imaging, sounding, and disaster alert services crucial for cyclone tracking and monsoon monitoring.

Titan is the only body besides Earth with stable surface liquids, consisting of hydrocarbon lakes and seas, observed by Cassini-Huygens mission.

51 Pegasi b was discovered in 1995 using radial velocity method with ground-based ELODIE spectrograph at Observatoire de Haute-Provence, not a space telescope. Note: Question tests precision—no space telescope made this discovery.

GSLV Mk II flew its last mission (EOS-03) in 2021/2022 era before being phased out in favor of LVM3 and upcoming NGLV for heavier payloads.

Vega is the brightest star in Lyra and part of the Summer Triangle asterism. It was once the North Star and will be again in ~12,000 years.

After separating Vikram, the Propulsion Module continued orbiting the Moon, hosting the SHAPE experiment to observe Earthshine for exoplanet habitability studies.

Neptune exhibits the strongest sustained winds in the solar system, reaching speeds up to 2,100 km/h near the Great Dark Spot, driven by internal heat despite minimal solar input.

Soviet cosmonaut Alexei Leonov conducted the first EVA on March 18, 1965, spending 12 minutes outside Voskhod 2, tethered to the spacecraft.

ISRO collaborated with Roscosmos/Glazkosmos for ECLSS technology transfer, critical for maintaining breathable air, temperature, and humidity in the crew module.

Dawn orbited protoplanet Vesta (2011-2012) and dwarf planet Ceres (2015-2018), studying early solar system differentiation and water-rich bodies.

Dark energy constitutes ~68% of the universe's energy content and drives the observed acceleration in cosmic expansion, opposing gravitational attraction.

NASA's DART (Double Asteroid Redirection Test) successfully impacted Dimorphos in September 2022, altering its orbit around Didymos, proving planetary defense capability.

NavIC transmits navigation signals in L5 and S-bands; the S-band also supports messaging/alert dissemination for disaster management and maritime safety.

Irregular galaxies have chaotic shapes without defined structure, often resulting from gravitational interactions or mergers with other galaxies.

LVM3 uses two large S200 solid rocket boosters for initial thrust. The core L110 stage uses liquid UDMH/N2O4, and the C25 upper stage uses cryogenic LH2/LOX.

The Kuiper Belt contains remnants from solar system formation, including icy bodies, comets, and dwarf planets like Pluto, Haumea, and Makemake.