the plumes of smoke from space. tankers dropping more fire retardant than on any other fire in history. a record-setting 450,000 gallons of what's called red slurry. water and fertilizer with red dye leaving many homes shrouded in pink dust. the fire ravaged this area. you'll still notice the hot spots, the blackened earth, charred trees. hand crews came and dug this line to prevent the flames from spreading to the other side but the fire rages on out of control. aditi roy, abc news, eldorado national forest. nasa scientists are celebrating a big achievement. a spacecraft named maven is now circling mars. it lifted off last november, traveled 442 million miles and launched in orbit just hours ago. that's where it will stay. it won't land on the planet. its mission is to study the planet's upper atmosphere to find out how mars went from warm, wet planet nearly history, billions of years ago, to a cold, dark one today. >> isn't it fascinating? obviously as much as they learn