Astronomy

Choose the Correct Answer

Correct Answer : Option b

Explanation
Statement 1 is correct: Milky Way Galaxy, large spiral system consisting of several hundred billion stars, one of which is the Sun. It takes its name from the Milky Way, the irregular luminous band of stars and gas clouds that stretches across the sky as seen from Earth. Although Earth lies well within the Milky Way Galaxy.

Statement 2 is correct: Sagittarius A* The supermassive black hole at the center of the Milky Way galaxy is far less luminous than other black holes at the centers of galaxies, which means our galaxy’s central black hole has not been actively gobbling up material around it. New evidence from NASA's IXPE (Imaging X-ray Polarimetry Explorer) telescope indicates that the ancient sleeping giant awoke roughly 200 years ago to devour gas and other cosmic detritus within its reach.

Statement 3 is not correct: The biggest known planet in the Milky Way may be HD 100546 b, which is a very large gas giant in the process of forming with a diameter roughly 6.9 times that of Jupiter, or 77 times that of Earth. The radius measurement is highly uncertain, as some of the material surrounding the planet may be masquerading as being part of the planet itself. The largest planets whose sizes are known for certain are HAT-P-67 b and XO-6b, both with diameters around 2.1 times that of Jupiter. Both of these planets have had their diameters measured directly as they transit their parent star. New evidence from NASA's IXPE (Imaging X-ray Polarimetry Explorer) telescope indicates that the ancient sleeping giant awoke roughly 200 years ago to devour gas and other cosmic detritus within its reach.