CNN — Strong words from Democratic presidential contender Dennis Kucinich may be nothing new, but his comments to a newspaper Tuesday questioning President Bush’s mental health are raising a few eyebrows.

“I seriously believe we have to start asking questions about his mental health," the Ohio congressman told the Philadelphia Inquirer. "There’s something wrong. He does not seem to understand his words have real impact."

Kucinich’s comments were in reference to the president’s recent remarks on Iran, in which he suggested World War III could occur if the country obtained nuclear capabilities.

“I’ve told people that, if you’re interested in avoiding World War III, it seems like you ought to be interested in preventing them from having the knowledge necessary to make a nuclear weapon," Bush said at a news conference earlier this month.

The Democratic presidential candidate later said he does not consider questioning the Bush’s mental health inappropriate, according the Inquirer’s Web site.

“You cannot be a President of the United States who’s wanton in his expression of violence," Kucinich said. "There’s a lot of people who need care. He might be one of them. If there isn’t something wrong with him, then there’s something wrong with us. This, to me, is a very serious question."

A Republican National Committee spokesman called the comments "absurd and irresponsible."

Kucinich: I saw a UFO

PHILADELPHIA (CNN) — So if there are space aliens, can they register to vote?

Perhaps Democratic presidential candidate Dennis Kucinich is courting their support, discussing a UFO sighting in Tuesday night’s debate.

He confirmed an account in actress Shirley MacLaine’s book that he saw a UFO at her home in Washington state. Though he didn’t address the rest of her description, that the Ohio congressman “felt a connection in his heart and heard directions in his mind.”

Kucinich said to moderator Tim Russert’s question, “It was an unidentified flying object, OK? It’s, like, it’s unidentified. I saw something.”

To laugher, he added, “I’m also going to move my campaign office to Roswell, New Mexico, and other one in Exeter, New Hampshire, OK? And also, you have to keep in mind that more — that Jimmy Carter saw a UFO and also that more people in this country have seen UFOs than I think approve of George Bush’s presidency.”

Rival candidate Barack Obama, asked if he believes in life on other planets, responded, “You know, I don’t know. And I don’t presume to know. What I know is there is life here on Earth, and that we’re not attending to life here on Earth.”

“We’re not taking care of kids who are alive and unfortunately are not getting health care," Obama continued. "We’re not taking care of senior citizens who are alive and are seeing their heating prices go up. So, as president, those are the people I will be attending to first."

"There may be some other folks on their way," he added.