A team of astrophysicists led by Dr. Kip Thorne at the California Institute of Technology studied the gravitational waves emitted by two black holes, ______ GW150914, which was the first event of its kind ever recorded, and GW170817, which also involved the collision of two neutron stars

The ‘Black Hole’ theory waspropounded by

Which of the following is not an example of astronomical phenomena known toastronomers before the invention of telescope?A. Black holes B. Motion of stars C. Phases of the Moon D. Visibility of planets

Who was the first to propose a specific model for the Big Bang?Group of answer choicesStephen HawkingGeorges LemaitreAlbert EinsteinJohn Wheeler

The ‘Black Hole’ theory waspropounded by [UPPCS (Mains) 2016UPPCS (Pre) 1996](A) C.V. Raman(B) H.J. Bhabha(C) S. Chandrashekhar(D) Hargovind Khurana8. A ‘black hole’ is a body in spacewhich does not allow any typeof radiation to come out. Thisproperty is due to its [IAS (Pre) 2000](A) Very small size(B) Very large size(C) High density(D) Very low density9. The terms ‘Event Horizon’,‘Singularity’, ‘String Theory’ and‘Standard Model’ are sometimesseen in the news in the context of[IAS (Pre) 2017](A) Observation and understandingof the Universe(B) Study of the solar and the lunareclipses(C) Placing satellites in the orbit ofthe Earth(D) Origin and evolution of livingorganisms on the Earth10. ‘Super Nova’ is[UP Lower Sub. (Mains) 2015](A) An asteroid (B) A black hole(C) A comet (D) A dyning star11. How many constellations are in ourSpace? [44th BPSC (Pre) 2000](A) 87 (B) 88(C) 89 (D) 9012. Which one of the following is not anAstronomical object?[UPPCS (Pre) 1996IAS (Pre) 1993](A) Pulsar (B) Brittle star(C) Black hole (D) Quasar13. A group of stars arranged in aparticular shape, is called[UPPCS (Pre) 2013](A) Milky Way (B) Constellation(C) Andromeda (D) Solar system

Text 1Physicist Elena Torres and her team investigated three neutron stars—extremely dense cores left over from supernova explosions—to understand the magnetic fields surrounding these stars. By analyzing gamma-ray emissions from these neutron stars, the researchers discovered patterns suggesting the existence of previously undetected space phenomena influencing the stars' magnetic fields. Elements such as iron and magnesium were identified, hinting at the presence of asteroid belts or dust clouds in close proximity to the neutron stars.Text 2While examining neutron star magnetic fields has yielded intriguing data, astrophysicist Leo Barnett criticizes the methods used to infer the presence of space phenomena like asteroid belts. He argues that attributing the detected iron and magnesium solely to nearby asteroid belts or dust clouds ignores other potential explanations. These could include interactions with interstellar gas or the remnants of the supernova that created the neutron stars themselves.8Mark for ReviewABCBased on the texts, how would Barnett (Text 2) most likely describe the conclusion reached by Torres and her team (Text 1)?AAs innovative, because it introduces a novel method of studying neutron stars’ magnetic fieldsBAs hasty, because it relies on gamma-ray emissions data that is still being understoodCAs speculative, because it does not fully account for all possible sources of iron and magnesiumDAs surprising, because gamma-ray emissions rarely reveal details about space phenomena like asteroid belts