CAPE CANAVERAL — An Atlas V rocket successfully launched from Cape Canaveral Air Force Station at 11:11 a.m. Tuesday with Orbital ATK's Cygnus spacecraft.

What's on board?

Orbital ATK's Cygnus spacecraft is packed with more than 7,600 pounds of science experiments, supplies and cargo for the crew of the ISS.

"We have a wide range of support equipment that's going to be headed to station to support the science that's up there already, but also to introduce brand-new capabilities," said Tara Ruttley, associate scientist for the ISS program, during a prelaunch news conference at Kennedy Space Center.

The Advanced Plant Habitat, a new KSC experiment, is a minifridge-sized plant chamber that will be able to grow larger, more nutritionally dense plants that could one day be consumed by astronauts on deep-space missions. Also on board are experiments that could improve chemotherapy treatments for cancer and magnetized tools for easier reproduction of Earth-like experiments.

Cygnus will also take 38 CubeSats, which are miniaturized satellites designed for research purposes, to the station for deployment later.