Back to Article List From the December 2007 issue How do gravity assists work? Alex Forbes, Castro Valley, California By Astronomy Staff | Published: December 1, 2007 By passing near a large body, a spacecraft can radically alter its speed and trajectory without expending any fuel. This may sound like a free lunch, but it isn’t.
Science Ask Astro: If gravity is the weakest fundamental force, why is the Sun’s gravity so far-reaching?
Exotic Objects, Galaxies Astronomers detected two major targets with a single telescope – a mysterious signal and its source galaxy
Human Spaceflight, Science Ask Astro: How fast could a ship reach light-speed without crushing its human occupants?
