dr. stewart jordan is senior scientist at the nasa goddard center. his view on aliens, not buying it. a study on ufo sightings. >> they studied hundreds of them and found two or three cases where they could not think of a complete explanation but all of the others were due to known physical phenomena or reflective and optical processes, objects that when seen on an angle appeared to be a saucer. >> reporter: he says us just like political debates on the news, scientists can take an observation and perceive it how they may. >> we will all have biases. even when you are a trained scientist and spent your life being rational and go after the facts you find at times you have to draw back because your feelings are getting involved. >> reporter: brittany morehouse, 9 news now. >> dr. jordan says all examples should be considered seriously but he says the ultimate message of the event maybe more about nuclear arms rather than aliens. >>> howard is up next with the forecast. >> pretty nice right now. we had beneficial rain yesterday and this morning. potentially threatening rains are heading