Classify the questions regarding extrasolar planets as True or False. True False
ID: 297817 • Letter: C
Question
Classify the questions regarding extrasolar planets as True or False.
True False Most extrasolar planets detected to date are thought to be gas giants close to their parent stars.
True False Extrasolar planets with orbits like Saturn, Uranus and Neptune have not been detected yet because astronomers have not been observing long enough to detect them.
True False Objects with 14-70 solar masses do not exist in orbit around other stars.
True False More than one third (33%) of extrasolar planets have orbits with eccentricities greater than 0.2.
Explanation / Answer
Most extrasolar planets detected to date are thought to be gas giants close to their parent stars. : FALSE(because theories of planetary formation had indicated that giant planets should only form at large distances from stars.)
Extrasolar planets with orbits like Saturn, Uranus and Neptune have not been detected yet because astronomers have not been observing long enough to detect them. : FALSE(because astronomers have detected eight planets in the last two years orbiting sunlike stars.)
Objects with 14-70 solar masses do not exist in orbit around other stars :
More than one third (33%) of extrasolar planets have orbits with eccentricities greater than 0.2.TRUE(more than 40 % of them have eccentricity greater than 0.2)