An international team of
astronomers working at telescopes in the Canary islands and Spain has detected at least 18 huge gas spheres estimated to have 5 to 15 times the mass of Jupiter, the solar system's largest planet.
ANSWER IS AThree very easy decision points here
1) Idiom :- estimated at is wrong ; estimated to /to be is correct
2) Subject-Verb agreement :- "Team" is a singular noun therefore singular verb should be used.
3) Modifier -the phrase "the solar system's largest planet" should modify JUPITERand not Jupiter's mass because Jupiter's mass cannot be a planet.
A. astronomers working at telescopes in the Canary islands and Spain
has detected at least 18 huge gas spheres
estimated to have 5 to 15 times the mass of
Jupiter, the solar system's largest planet.
CORRECT
B. astronomers working at telescopes in the Canary islands and Spain has detected at least 18 huge gas spheres estimated to be 5 to 15 times
Jupiter's massINCORRECT:-
jupiter's mass cannot be the largest planet ; Jupiter is the largest planet.
C. astronomers is working at telescopes in the Canary islands and Spain,
having detected at least 18 huge gas spheres that are
estimated at 5 to 15 times the mass of Jupiter
WRONG:-
having is incorrect tense.
Estimated at is wrong idiom
D. astronomers, working at telescopes in the Canary islands and Spain, and has detected at least 18 huge gas spheres
estimated at 5 to 15 times the mass of Jupiter
WRONG:-
Estimated at is wrong idiom
E. astronomers, working at telescopes in the Canary islands and Spain, has detected at least 18 huge gas spheres
they have estimated to be 5 to 15 times
Jupiter's massINCORRECT:- Team is singular and the subject of the sentence. therefore
"they" is wrong pronoun and is used incorrectly
"have" is incorrect;
Jupiter's mass is incorrect because mass cannot the biggest planet.
LM wrote:
An international team of astronomers working at telescopes in the Canary islands and Spain has detected at least 18 huge gas spheres estimated to have 5 to 15 times the mass of Jupiter, the solar system's largest planet.
A.
B. astronomers working at telescopes in the Canary islands and Spain has detected at least 18 huge gas spheres estimated to be 5 to 15 times Jupiter's mass
C. astronomers is working at telescopes in the Canary islands and Spain, having detected at least 18 huge gas spheres that are estimated at 5 to 15 times the mass of Jupiter
D. astronomers, working at telescopes in the Canary islands and Spain, and has detected at least 18 huge gas spheres estimated at 5 to 15 times the mass of Jupiter
E. astronomers, working at telescopes in the Canary islands and Spain, has detected at least 18 huge gas spheres they have estimated to be 5 to 15 times Jupiter's mass