Where could scientists look to observe a black hole? (1 point)

• the edge of the solar system
• the solar system asteroid belt
• the center of the sun
• the center of the Milky Way
What is the main challenge astronomers face when trying to directly detect black holes? (1 point)
• Black holes trap all light.
• Black holes are empty.
• Black holes are too black.
• Black holes are too small.
Which of these characteristics of a star make it most likely to become a black hole? Select the two correct answers. (1 point)
• Its mass is greater than 20 times the mass of the sun.
• It has an abundant supply of hydrogen.
• Its mass is equal to that of the sun.
it is dying