Introduction

A brief inventory of space debris includes: a spatula, a glove, a mirror, a bag with astronaut tools, spent rocket stages, bolts, paint chips, defunct spacecraft, and around 3,000 dead satellites, orbiting Earth at speeds of roughly 18,000 m.p.h.

Most space junk is moving in low Earth orbi...

Two emerging technologies may propel NASA and the rest of the world into an era of faster, low-cost exploration that would lead to more exploration and democratise access to the Solar System.

• A new generation of companies is developing new rockets for small satellites. Rocket Lab has...

Nine spacecrafts have studied jupiter up close. NASA'S Juno spacecraft is currently studying the gas giant planet from orbit 

The spacecraft, which arrived at Jupiter in July 2016, is the first to study the planet's mysterious, cloud-shrouded interior. Scientists also use the Earth-orbiting...