671.
What is the name of the region surrounding a black hole where objects can still escape if they have sufficient speed?
Explanation:
672.
Which phenomenon, related to pulsars, results in the emission of regular pulses of electromagnetic radiation?
Explanation:
673.
What is the term for the bending of starlight as it passes near a massive celestial object like a galaxy or galaxy cluster?
Explanation:
674.
Which phenomenon occurs when two neutron stars merge, releasing a burst of gravitational waves and often creating heavy elements?
Explanation:
675.
What is the term for a theoretical entity that could be responsible for the gravitational effects observed in galaxies and clusters, although it remains undetected?
Explanation:
676.
What is the term for the process by which a main-sequence star like the Sun eventually becomes a red giant and expands?
Explanation:
677.
Which scientist is credited with proposing the concept of black holes and the theory of Hawking radiation?
Explanation:
678.
What is the name of the boundary around a black hole beyond which nothing, not even light, can escape?
Explanation:
679.
Which type of galaxy is characterized by a spherical or ellipsoidal shape and contains mainly older stars?
Explanation:
680.
What is the term for the study of the distribution and properties of galaxies in the universe?