Kelly, an Arizona Senate candidate, is married to former Rep. Gabrielle Giffords, who was shot in a 2011 massacre that left six people dead.
The key Democratic Senate candidate, who vowed to refuse corporate PAC money, has longstanding ties to corporations through speaking engagements.
"There’s nothing that we saw that would prevent us from going to Mars,” said astronaut Scott Kelly, who spent 340 days in space.
The decision clears the path for former astronaut Mark Kelly to challenge GOP Sen. Martha McSally.
He’s a dream recruit for Democrats, but he could face one of several contentious primaries in key Senate races.
He rocketed to the national spotlight when his Congresswoman wife Gabrielle Giffords was shot in a failed assassination attempt.
Gabby Giffords is set to put Democrats’ suburban strategy in action.
“To see our elected leaders do nothing over and over again, it’s just an incredibly sad situation.”
Only 93 percent of Scott Kelly's gene expression has "returned to normal" since his prolonged stint on the International Space Station, according to a new study.
The campaign organization said Democrats should focus on offering thoughts and prayers.
For years, the former Arizona congresswoman and her husband, former astronaut Mark Kelly, have been speaking out for gun control.
"I saw our planet change in one decade. This is nuts."
It's less than two weeks since a mass shooting in his home state.
Scott Kelly, the commander of the International Space Station, returns from his mission March 1.
Mark, you may believe that the Eddie Eagle program is a serious and successful effort to spread the word about gun safety, but it's actually the NRA's poster child for making everyone believe that the organization represents a positive force in the debate about guns.
It takes two. As part of the research program, researchers on the ground will compare Kelly's health to that of his identical