Dwarf galaxies create new stars just like bigger galaxies do — but for decades researchers haven’t been able to find the same star-forming ingredients inside of them. An astronomer at Lowell Observatory helped explain the mystery.
Maricopa County Sheriff's officials say 28-year-old Mario Alberto-Garcia Leon is being held on suspicion of several charges of felony criminal damage, destroying livestock, animal cruelty and aggravated assault.
The U.S. Border Patrol's parent agency on Monday issued nationwide custody standards, a little more than a year after its jails were overwhelmed with Central American children fleeing to the United States.
Three different agencies sent helicopters to help a Boy Scout troop on a hike in Cochise County on Saturday after the group’s leader suffered a heart attack. All three attempts at an air rescue failed because of strong winds.
The 87 flags flew over Capitol, then were carefully folded and displayed at a memorial in Maryland, where they will remain until they are handed Sunday to survivors of 87 firefighters who died in the line of duty.