In coming months—in May and June - NASA intends to launch from Florida two rockets both carrying rovers to land on Mars, rovers that are equipped with plutonium-powered heaters. The Global Network has been conducting demonstrations to protest these launches.

Gagnon points out that NASA’s own Environmental Impact Statement (EIS) says that “the overall chance of an accident occurring” for each launch “is about 1 in 30” and "the overall chance of any accident that releases radioactive materials to the environment is about one in 230. "People offsite in the downwind direction...could inhale small quantities of radio nuclides" the NASA EIS says.

“These are high odds for disaster which could impact—as NASA admits—on people as far as 60 miles from the Kennedy Space Center in Florida,” said Gagnon.

“These and other NASA space shots involving materials must be cancelled in the wake of the Columbia disaster and safe space energy systems be used instead,” stressed Gagnon.

Said Grossman: “Space exploration is dangerous but to include nuclear poisons in the equation makes any accident far, far more deadly—and it is unnecessary. In recent years there have been breakthroughs in energizing space systems safely especially through the use of solar technologies. But NASA under Director Sean O'Keefe is partnering with nuclear interests to heavily nuclearize U.S. space operations. The Columbia disaster must show us the awful folly of this atomic space path.”