For decades, one of the biggest challenges of sending humans to Mars hasn’t just been getting there, it’s getting back.
A researcher says he found a possible shortcut to Mars that would halve the time it takes to travel to the planet and back to less than a year.
A rare predawn alignment will bring together Mars, Saturn and a thin crescent moon in the eastern sky on May 14, creating a striking cosmic triangle visible to skywatchers across much of the world.