Author: Astronomy Staff

Stars

When Sirius A expands into a red giant, could white dwarf Sirius B go supernova?

Exoplanets, Planets, Robotic Spaceflight, Solar System

How would a helicopter lift off the surface of Mars?

Galaxies, Stars

What would happen if two stars collided?

Exoplanets, Planets, Solar System

Is it possible to see meteors on Mars?

The Sun

When will the Sun become a black dwarf?

Cosmology

Does the space inside an atom expand with the universe?

The Sun

Have sunspots been observed on other stars?

Exotic Objects

How do astronomers calculate the mass of a black hole?

Robotic Spaceflight, Science

How do photons propel solar sails?

Observing

Web Extra: Sky Guide 2020

The Sun

What elements does the Sun contain?

Exoplanets, Planets, Solar System

What is the source of Jupiter’s radiation?