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Generate QuizSpace – True/False – GK Questions
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ASI is the acronym for the Italian Space Agency.
- True
- False
Answer: True
Agenzia Spaziale Italiana (ASI) manages Italy's space program, contributing modules to ISS and developing Vega rocket with ESA.
Makemake is brighter than Pluto in visible light.
- True
- False
Answer: False
Pluto has higher albedo (~0.5-0.7) than Makemake (~0.77 but smaller size); Pluto appears brighter due to larger diameter despite similar reflectivity.
The Lyman-alpha forest in quasar spectra reveals the distribution of neutral hydrogen in the intergalactic medium.
- True
- False
Answer: True
Absorption lines blueward of Lyman-alpha emission trace intervening hydrogen clouds at different redshifts, mapping cosmic web structure.
Aerogel is used in space missions primarily for its high thermal insulation properties.
- True
- False
Answer: True
Silica aerogel's nanoporous structure makes it an excellent insulator; used on Mars rovers (Sojourner, Spirit, Opportunity) to protect electronics from extreme cold.
Sputnik 1 remained in orbit for less than three months before re-entering Earth's atmosphere.
- True
- False
Answer: True
Launched Oct 4, 1957, Sputnik 1 orbited for 92 days before burning up on Jan 4, 1958, though its radio signals lasted only 21 days.
Quasi-periodic oscillations (QPOs) in X-ray binaries help estimate black hole spin.
- True
- False
Answer: True
High-frequency QPOs correlate with inner disk dynamics near ISCO, providing indirect spin measurements complementary to continuum fitting.
Mars has polar ice caps composed of both water ice and dry ice (CO₂).
- True
- False
Answer: True
Martian polar caps contain layered water ice overlain by seasonal CO₂ frost; north cap retains summer water ice, south cap retains perennial CO₂.
The Zarya module was the first component of the International Space Station launched in 1998.
- True
- False
Answer: True
Zarya (Functional Cargo Block) launched Nov 20, 1998, providing initial propulsion/power until Unity node arrived weeks later.
Psyche is a metallic M-type asteroid targeted by a NASA mission launched in 2023.
- True
- False
Answer: True
NASA's Psyche mission launched Oct 2023 to explore the metal-rich asteroid 16 Psyche, possibly a protoplanet's exposed core.
Magnetars are neutron stars with extremely powerful magnetic fields (~10^14 Gauss).
- True
- False
Answer: True
Magnetars possess magnetic fields trillions of times stronger than Earth's, producing giant flares and soft gamma repeater bursts.
Aerobraking uses atmospheric drag to reduce spacecraft velocity and adjust orbit without propellant.
- True
- False
Answer: True
Aerobraking gradually lowers apoapsis by skimming upper atmosphere, saving fuel for orbit insertion (used by Mars Reconnaissance Orbiter, Mangalyaan).
Miranda, a moon of Uranus, shows evidence of extreme geological resurfacing with coronae features.
- True
- False
Answer: True
Miranda's surface displays ovoid coronae, fault canyons, and varied terrains suggesting past tidal heating or catastrophic disruption/reassembly.
The photon sphere is a region around a black hole where gravity bends light into circular orbits.
- True
- False
Answer: True
At 1.5 Schwarzschild radii, photons can theoretically orbit a non-rotating black hole, forming the boundary visible in EHT images as the bright ring.
Mercury has ice deposits in permanently shadowed craters at its poles.
- True
- False
Answer: True
Despite proximity to the Sun, Mercury's zero axial tilt keeps polar craters in permanent shadow, allowing water ice to persist, confirmed by MESSENGER mission.
Skylab was the first U.S. space station, launched in 1973.
- True
- False
Answer: True
Skylab operated from 1973-1979, hosting three crews and conducting solar/astronomical research before re-entering Earth's atmosphere in 1979.
Haumea is distinguished by its elongated ellipsoidal shape and rapid rotation.
- True
- False
Answer: True
Haumea rotates every ~4 hours, causing extreme flattening into a triaxial ellipsoid. It also has a ring system and two moons.
Wolf-Rayet stars are massive stars losing mass rapidly through strong stellar winds.
- True
- False
Answer: True
Wolf-Rayet stars (>20 solar masses) exhibit broad emission lines from intense winds ejecting outer layers, preceding supernova or gamma-ray burst events.
Starlink satellites operate in geostationary orbit for low-latency internet.
- True
- False
Answer: False
Starlink uses Low Earth Orbit (~550 km) constellations to achieve low latency (~20-40 ms), unlike GEO satellites which have ~600 ms latency due to distance.
Jupiter emits more energy than it receives from the Sun.
- True
- False
Answer: True
Jupiter radiates about twice the energy it absorbs from sunlight, generated by Kelvin-Helmholtz contraction and residual heat from formation.
KARI is the space agency of South Korea.
- True
- False
Answer: True
Korea Aerospace Research Institute (KARI) manages South Korea's space program, including Nuri launch vehicle and KPLO lunar orbiter.