1.A neutron star's mass is about ... times the mass of the Sun.
2.A magnetar is a neutron star with...
3.Who wrote "About Heavens"?
4.During what event in 1919 Einstein's theory according to which light beams can be deviated was confirmed ?
5.Who attributed the name "quanta" to the radiation units for the first time?
6.Which of the following sentences best describes ineptness ?
7.Who invented the term "black hole "?
8.What is the name of nearest star to Earth except the Sun ?
9.In the center of a black hole there is a point called singularity with virtually zero volume and infinite density.
10.Which is the largest galaxy in the local group that includes our own galaxy?