The temperatures of the clouds that made them were higher because the clouds consisted entirely of hydrogen and helium

Supernovae would be more common

Edward Pickering

Henry Norris Russell

Annie J Cannon

The amount of energy produced per second

A red giant

Globular clusters

core

radiation zone

photosphere

Earth would slowly spiral into the black hole, because the black hole is the same mass as the Sun so it would not spiral in immediately.

Earth would be quickly sucked into the black hole, because the gravity around a black hole is much greater than the gravity around our Sun.

Earth’s orbit would not change, because the black hole is the same mass as the Sun.

Electromagnetic force only works on tiny particles, whose mass is very small.

The electromagnetic force follows an inverse cube law with distance, rather than an inverse square law.

Most objects are electrically neutral.

Electrical charge is cancelled out by mass.

The electromagnetic force only works on scales of about the size of an atomic nucleus.