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Exercise "Astronomy", created by baboune16 (a free exercise to learn English):
Results of the 760 people who have taken this test:
Average mark: 67 / 100 Share
Latest member with a 100/100 (perfect mark): bleuclair64 / FRANCE, on Thursday 02 December - 17:04:
"Thank you"
They got a perfect mark
Stats (759 candidates)
Question 1 passed: 61.5 %
At the moment,more than 4,500 * have been discovered and confirmed ; however thousands more require further confirmation.
Question 2 passed: 75.2 %
The Earth is located in one of the spiral arms of our *, the Milky Way.
Question 3 passed: 68.1 %
Virgo Cluster is one of the well-known *.
Question 4 passed: 53.2 %
HST or Hubble is a * that was launched into a low orbit in 1990.
Question 5 passed: 56.5 %
A * is a type of neutron star believed to have a very powerful magnetic field.
Question 6 passed: 69.6 %
Astronomical * is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiations.
Question 7 passed: 52.3 %
A * is a star whose brightness, as seen from Earth, fluctuates.Those stars are classified as intrinsic or extrinsic variables.
Question 8 passed: 64.2 %
Tycho's Nova is one of the few recorded * in the Milky Way.The astronomer Tycho Brahe discovered it in 1572.
Question 9 passed: 73.3 %
Lewis is an * who uses a telescope and computers in an observatory.
Question 10 passed: 80.8 %
A * is a region of spacetime where gravity is so strong that nothing, even radiation such as light, can escape from it.
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