Space – GK Questions

A Geostationary Orbit (GEO) is a circular orbit 35,786 km above the Earth's equator, following the direction of Earth's rotation. An object in such an orbit has an orbital period equal to the Earth's rotational period, appearing stationary to ground observers.

Venus has a retrograde rotation, meaning it spins in the opposite direction to most other planets (east to west). This causes the Sun to rise in the west and set in the east on Venus.

Neil Armstrong was the first human to step onto the lunar surface on July 20, 1969, during the Apollo 11 mission, famously stating, 'That's one small step for man, one giant leap for mankind.'

Sirius, also known as the Dog Star, is located in the constellation Canis Major. It is the brightest star in the night sky.

GSLV Mk III, now renamed LVM3 (Launch Vehicle Mark-3), is ISRO's heaviest operational launch vehicle, used for launching heavy satellites like Chandrayaan-2, Chandrayaan-3, and OneWeb satellites.

While Saturn has the most prominent and visible rings, Jupiter, Uranus, and Neptune also have ring systems, though they are fainter and less extensive.

CNSA stands for China National Space Administration. It is responsible for China's national space program, including the Tiangong space station and Chang'e lunar missions.

Halley's Comet is a short-period comet visible from Earth every 75–76 years. It was last seen in 1986 and is expected to return in 2061.

Soviet cosmonaut Yuri Gagarin became the first human to journey into outer space on April 12, 1961, aboard the Vostok 1 spacecraft.

A light year is a unit of distance, not time. It is the distance that light travels in a vacuum in one Julian year (approximately 9.46 trillion kilometers).

Gaganyaan is India's first human spaceflight programme, aiming to demonstrate human spaceflight capability by launching a crew of 3 members to an orbit of 400 km for a 3-day mission.

Jupiter is the largest planet in the solar system, with a mass more than two and a half times that of all the other planets combined.

The Indian National Satellite (INSAT) system is one of the largest domestic communication satellite systems in the Asia-Pacific region, used for telecommunications, television broadcasting, and meteorology.

The event horizon is the boundary around a black hole beyond which nothing, including light, can escape the gravitational pull. This is a defining characteristic of black holes.

The James Webb Space Telescope (JWST) was launched in December 2021. It observes primarily in the infrared spectrum and is designed to succeed Hubble, offering deeper insights into the early universe.

The Main Asteroid Belt is a region of space between the orbits of Mars and Jupiter where most of the asteroids in our Solar System are found.

ISRO headquarters is in Bengaluru, Karnataka. Sriharikota is the launch site (SDSC SHAR), and Thiruvananthapuram houses VSSC (Vikram Sarabhai Space Centre).

NASA is the United States government agency responsible for the civilian space program, as well as aeronautics and space research.

Our Solar System is located in the Milky Way Galaxy, a barred spiral galaxy. The Andromeda Galaxy is the nearest major galaxy to the Milky Way.

Launched in 2013, Mangalyaan's main goals were to explore Mars' surface features, morphology, mineralogy, and Martian atmosphere, particularly methane detection. It did not involve landing.