Outer Solar System

Exoplanets, Planets, Robotic Spaceflight, Solar System

Looking back before peering ahead: Pluto, an interactive timeline

Solar System

Astronomers recently discovered that Scholz’s star passed close to the Sun 70,000 years ago. Wouldn’t its gravity have sent Oort Cloud comets raining into the inner planets?

Exoplanets, Planets, Robotic Spaceflight, Solar System

Postage for Pluto: A 29-cent stamp pissed off scientists so much they tacked it to New Horizons

Exoplanets, Planets, Robotic Spaceflight, Solar System

Why didn’t Voyager visit Pluto?

Exoplanets, Planets, Robotic Spaceflight, Solar System

1992 QB1: The first Kuiper Belt object opened a realm of 1,000 Plutos

Exoplanets, Planets, Robotic Spaceflight, Solar System

Two Plutos collide in the outer solar system. What are the odds?

Exoplanets, Planets, Solar System

Astronomers discover a young solar system around a nearby star

Exoplanets, Planets, Robotic Spaceflight, Solar System

The Kuiper Belt by any other name is just as cool

Exoplanets, Planets, Robotic Spaceflight, Solar System

A much expected journey: How Pluto became a giant among the dwarfs

Solar System, Stars

A close call of 0.8 light-years

Exoplanets, Planets, Solar System

Web Extra: A historic encounter with Pluto

Robotic Spaceflight, Solar System

“Tsunami wave” still flies through interstellar space