Explanation for Question 27 From the Reading Section on the 2017 May Sat
Question 27 says according to the passage, 2 why was the TTB technique difficult to implement before the data from the Kepler 3 spacecraft became available? So since we see that this question starts off 4 with the phrase, according to the passage, we know that the answer is going 5 to come pretty directly from text evidence. 6 And so we're looking for text evidence to tell us about why 7 the technique was difficult to implement before the Kevlar spacecraft became 8 available. So what was going on? 9 What was the problem before the Kepler spacecraft was in play here? 10 So if we look back at the passage, 11 we can see that this paragraph here is kind of outlining 12 what was around before the catheter spacecraft. 13 And so any challenges that they face now might fall into this category of 14 answering this question. And we can see there that it says for years afterwards, 15 for years afterward, however, astronomers fail to detect trends at timing variations. 16 So it's difficult to use this technique they're failing at using this technique because 17 almost all known exoplanets were gas giants spinning around their stars and tight 18 orbits. So again, 19 we know this is the evidence we're supposed to be looking at because it's 20 specifically outlining why they're failing at using this technique. 21 Now it says, because all known exoplanets were gas giants element one. 22 So gas giants, maybe that's an, an answer choice. 23 And then element two is spinning around stars. 24 So ...