Quiz 013: Astronomy

Questions

01.)Discovered in 1915 by Robert Innes ,What is the nearest known star to the Sun?

02.)What is the largest object in the main asteroid belt that lies between the orbits of Mars and Jupiter,with a diameter of 940 km (580 mi)?

03.)A dwarf planet is a new term that astronomers adopted in 2006 as part of a three-way categorization of bodies orbiting the Sun. its neighbouring region of planetesimals (debris disks) and is not a satellite of any other body, IAU has recognized five dwarf planets in the solar system. Which is the largest among them, also the ninth largest body to orbit the Sun directly, and is estimated to be approximately 2,300 to 2,400 km in diameter (about a quarter of the Earth’s mass)?

04.)Known colloquially as the “Dog Star”, reflecting its prominence in its constellation, Canis Major,it is he brightest star in the night sky which is almost twice as bright as Canopus, the next brightest star. What is this star?

05.)It was a periodic Jupiter-family comet first recorded in 1772 by Montaigne and Messier and finally identified as periodic in 1826. It was subsequently observed to split in two and has not been seen since 1852.What is the name of this comet?

06.)It is a short-period comet visible from Earth every 75–76 years. It is the only known short-period comet that is regularly visible to the naked eye from Earth, and the only naked-eye comet that can appear twice in a human lifetime. It last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-2061.What is the name of this comet?

07.)It is the largest moon of Saturn and the second-largest natural satellite in the Solar System. It is the only moon known to have a dense atmosphere, and the only known body in space, other than Earth, where clear evidence of stable bodies of surface liquid has been found. What is it?

08.)With a Diameter of 5268km, is the largest and most massive of the Solar System’s moons & it is the largest without a substantial atmosphere. What is it?

09.)It was a comet that broke apart in July 1992 and collided with Jupiter in July 1994, providing the first direct observation of an extraterrestrial collision of Solar System objects. What is it?

10.)It was a long-period comet named after the Italian astronomer. it was the most brilliant comet that appeared in the 19th century and  was also the first comet to be photographed. Name this comet?

Answers

01.) Proxima Centauri

02.) Ceres

03.) Eris

04.) Sirius

05.) Biela’s Comet

06.) Halley’s Comet

07.) Titan

08.) Ganymede

09.) Comet Shoemaker–Levy 9

10.) Comet Donati

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