Ask Astro

Deep-Sky Objects, The Sun

Ask Astro: What happened to the Sun’s original star cluster?

Solar System

Ask Astro: Are the outer planets moving away from the Sun?

Stars

Ask Astro: What is the life cycle of a red dwarf star?

Cosmology, Exotic Objects

Ask Astro: How do gravitational waves reveal the distances and masses of colliding objects?

Cosmology, Milky Way

Ask Astro: What is the shape of the Milky Way’s dark matter?

Solar System, The Sun

Ask Astro: What will happen to Earth when the Sun dies?

Solar System, The Moon

Ask Astro: What happened after the giant impact that created the Moon?

Exoplanets

Ask Astro: Have there been any exoplanets discovered in globular star clusters?

Galaxies

Ask Astro: Why do galaxies have spiral arms? Do smaller objects have them too?

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?