Free practice for SSC, UPSC, Banking & Railway exams. No login required.
Answer: Vienna
UNOOSA at Vienna International Centre promotes international cooperation in peaceful space use, maintaining registry of launched objects.
Answer: True
Pluto-Charon system is mutually tidally locked due to close proximity and comparable mass ratio; both bodies keep same hemisphere facing each other permanently.
Answer: Korabl-Sputnik 5
Korabl-Sputnik 5 (Aug 1960) returned dogs Belka and Strelka after 18 orbits; Laika (Sputnik 2) died in orbit, making KS-5 first safe biological return.
Answer: Nuclear fission reactor
NTP uses fission reactors to heat liquid hydrogen to ~2500 K, achieving Isp ~900 s vs ~450 s for LH2/LOX chemical engines, enabling faster Mars transit.
Answer: 1962
INCOSPAR was formed in 1962 within DAE, laying groundwork for ISRO's establishment in 1969; it initiated sounding rocket launches from Thumba.
Answer: True
Massive stars (>8 solar masses) evolve into red supergiants before core collapse triggers Type II-P/L supernovae; Betelgeuse and Antares are current examples.
Answer: 17 km
TV-D1 conducted on Oct 21, 2023, separated the Crew Escape System at ~17 km altitude during ascent, validating abort sequence and parachute recovery systems.
Answer: Venus
Venus has a runaway greenhouse effect due to its dense CO₂ atmosphere (92 bar pressure), raising surface temperatures to ~465°C, hotter than Mercury despite being farther from the Sun.
Answer: Equator
Geostationary anchor point requires equatorial location; centrifugal force balances gravity along tether, enabling climber ascent without rockets.
Answer: True
Tidal dissipation synchronizes rotation/orbital periods over time; most major moons including Earth's Moon are tidally locked.
Answer: DESTINY+
JAXA's DESTINY+ (Demonstration and Experiment of Space Technology for INterplanetary voYage) targets active asteroid/comet 311P, studying dust ejection mechanisms.
Answer: Gravity Probe B
Gravity Probe B (2004-2011) measured frame-dragging via gyroscope precession, confirming general relativity prediction within ~20% accuracy.
Answer: Medium X-ray (8-30 keV)
POLIX (Polarimeter Instrument in X-rays) covers 8-30 keV, complementing AstroSat's CZTI and IXPE's soft band, studying accretion geometry.
Answer: True
Passivation vents residual propellants/batteries, eliminating explosion risks; mandated by international guidelines (IADC/UN COPUOS).
Answer: Silicates and organics/water
C-chondrites contain hydrated minerals, amino acids, and presolar grains, preserving early solar system composition and prebiotic chemistry.
Answer: Mariner 10
Mariner 10 used Venus gravity assist in Feb 1974 to reach Mercury, pioneering planetary flyby technique later exploited by Voyagers and others.
Answer: 3-4
LSST's wide-field camera images 20,000 deg² every 3-4 nights, detecting transients, moving objects, and dark matter via weak lensing.
Answer: True
Mars' thin atmosphere limits parachute deceleration; payloads >1 ton require supplemental propulsion (sky crane/retro-rockets) as used by Curiosity/Perseverance.
Answer: Solar photovoltaic arrays
SEP converts sunlight to electricity via solar arrays powering electric thrusters, enabling efficient cargo transport (e.g., Psyche, Lunar Gateway HALO).
Answer: Planetary rotation
Jupiter's rapid rotation (9.9 hr) drives magnetospheric dynamics via centrifugal forces and Io plasma torus coupling, unlike solar-wind-dominated Earth.