Ask Astro

Exotic Objects, Galaxies

Ask Astro: What happens when a galaxy ejects its supermassive black hole?

Exoplanets, Planets, Robotic Spaceflight, Solar System

Ask Astro: Can New Horizons help us find Planet Nine?

Cosmology, Exotic Objects

Ask Astro: What would happen if NGC 6240’s three supermassive black holes merged?

Exoplanets, Planets, Solar System

Ask Astro: How hot would Venus be at different distances from the Sun?

Exotic Objects

Ask Astro: How do stars make elements heavier than iron?

The Moon

Ask Astro: Why does the Moon disappear during New Moon?

Cosmology, Galaxies

Ask Astro: If dark matter is invisible, then how do we detect it?

Galaxies, Milky Way

Ask Astro: How many satellite galaxies does the Milky Way have?

Exoplanets, Planets

Ask Astro: Can planets be pear-shaped, or are they all spheres?

Exoplanets, Planets, Solar System, Stars

Ask Astro: Could Jupiter ever become a star?

Solar System

Ask Astro: How do astronomers know if an object came from another star?

Milky Way, The Sun

In which direction does the Sun move through the Milky Way?