Why can’t the Sun be a black hole? No. Stars like the Sun just aren’t massive enough to become black holes. Instead, in several billion years, the Sun will cast off its outer layers, and its core will form a white...
What are the properties of a pulsar? Characteristics. Pulsars are rapidly spinning neutron stars, extremely dense stars composed almost entirely of neutrons and having a diameter of only 20 km (12 miles) or less. Pulsar masses range between 1.18 and 1.97...
What is a pulsar from an observational standpoint? From an observational standpoint, what is a pulsar? An object that emits flashes of electromagnetic radiation several times per second (or even faster), with near perfect regularity. What is a pulsar quizlet? A...
Which of the following can actually escape from inside a black hole’s event horizon? Since general relativity states that nothing can travel faster than the speed of light, nothing inside the event horizon can ever cross the boundary and escape beyond...
Which statement is not true about black holes? Answer and Explanation: All statements listed are true except for c) Everything orbiting a black hole will eventually be sucked in. Which of the following best describes a black hole? Which of the...
What is a pulsar in simple terms? A pulsar is a star that spins very fast and cannot be seen but produces regular radio signals. What is a pulsar and why is it called a pulsar? pulsar, in full pulsating radio...
What is a pulsar Why do they pulse at such short regular intervals? A pulsar is a rapidly rotating neutron star. The “pulses” of radiation we see from a pulsar are due to a misalignment of the neutron star’s rotation axis...
Why do you expect neutron stars to have a more powerful magnetic field than a white dwarf? Why do you expect neutron stars to have powerful magnetic field? When the star collapses, the magnetic field is squeezed into a smaller volume,...
What is the evidence for the existence of black holes? The best evidence of stellar-mass black holes comes from binary star systems in which (1) one star of the pair is not visible, (2) the flickering X-ray emission is characteristic of...
How are white dwarfs and neutron stars related? White dwarfs are formed from the collapse of low mass stars, less than about 10 time the mass of the Sun. This star loses most of its mass in a wind, leaving behind...