Accurate astronomical terminology and definitions are essential for understanding celestial objects. It's important to distinguish between different types of celestial bodies and phenomena.
Consider the following pairs : Objects in Description space 1. Cepheids : Giant clouds of dust and gas in space : Stars which brighten and dim 2. Nebulae periodically : Neutron stars that are formed 3. Pulsars when massive stars run out of fuel and collapse How many of the above pairs are correctly matched?
Asked in UPSC IAS 2023 · Topic: Astronomy and Astrophysics Basics (Stars: Formation, Evolution, Classification (Basic))
More Space Technology questions
- Hubble space telescope has for the first time detailed image of surface of distant star. Name of the star is:
- Which star is/are nearest to our solar system?
- What is ‘HR 6819’, that has been discovered by the European Southern Observatory (ESO)?
- Which of the following statements are correct regarding India's first Solar Mission Aditya L1? 1. It aims to put Aditya-L1 satellite (800 kg) into a halo orbit around Lagrangian point L1 of Sun. 2. The L1 point is situated at a distance of about 1500 km from the Earth 3. The satellite will carry 7 payloads including the main payload Visible Emission Line Coronagraph (VELC).
- Consider the following statements: If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth? 1. GPS and navigation systems could fail. 2. Tsunamis could occur in the oceanic regions. 3. Power grids could be damaged. 4. Intense aurorae could occur over much of the Earth. 5. Forest fires could occur over a wide area. 6. Orbits of the satellites could be disturbed. 7. Shortwave radio communication of the aircraft flying over polar regions could be interrupted. Which of the statements given above are correct?
- Power grids could be damaged Rapid changes in the Earth's magnetic field can induce currents in long conductors like power lines, potentially overloading and damaging transformers, leading to blackouts. 4. Intense aurorae could occur over much of the Earth Increased particle influx into the atmosphere leads to more widespread and intense aurora displays, visible at lower latitudes than usual. 6. Orbits of the satellites could be disturbed Heating and expansion of the upper atmosphere increase atmospheric drag on satellites in low Earth orbit, causing them to lose altitude. 7. Shortwave radio communication of the aircraft flying over polar regions could be interrupted Solar storms disrupt the ionosphere, which is crucial for reflecting shortwave radio signals over long distances, particularly affecting communications in polar regions where magnetic field lines channel particles. 70. During solar eclipse
- Which of the following statements related to Aditya-L1 is/are true ?
- What is the Surya Heliophysics Foundation Model?