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

Supernovae would be more common

Annie J Cannon

Henry Norris Russell

Edward Pickering

The amount of energy produced per second

A red giant

Globular clusters

radiation zone

core

photosphere

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

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

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

Most objects are electrically neutral.

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

Electrical charge is cancelled out by mass.