X-rays were discovered in 1895 by Wilhelm Conrad Röntgen. Since then, it has been an indispensable means of medicine. However, X-rays can lead to damage to the genetic material: In this video, we show how the body defends itself against it and what measures are taken by radiation protection. More i
The cosmic ray detector known as CREAM is headed for the International Space Station, with a goal of measuring the highest energy possible for direct measurement of high-energy cosmic rays. Visit http://science.nasa.gov/ for more. New Mission Going to the Space Station to Explore Mysteries of 'Cos
In the late 1960s, scientists accidentally discovered gamma-ray bursts — intense flashes of energy that typically last no more than a few minutes and are often as short as a fraction of a second. For decades after the discovery of these powerful bursts, they remained one of the greatest mysteries in
Jeb Drummond is a murderous sheep herder that has Adam taken hostage to try and force Ben to sign over a large section of Ponderosa land to him. Jeb Drummond is driving his herd of sheep across the Ponderosa when the Cartwrights ride up. Ben politely tells him to leave. Jeb asks for permission, he'
About to set out on a cattle drive, Ben hires a young drifter named Sam Jackson as one of his drovers. What he doesn't know is that Jackson is really outlaw Johnny Logan, who signed on to the drive because he knew it was going to pass near the town of Waycross, and Logan is determined to kill the Wa
A neighboring rancher, Andy, is good friends with Ben, but his son (Todd) wants to sell their land for mining operations which will spoil the water rights agreement that Andy and Ben made years ago. Ben and Adam find their neighbor Todd McCarren surveying the property line. Todd says, rudely, that
After Joe kills a man in self-defense who tried to set fire to the Ponderosa to clear himself some land, he has to take his lively, feisty, wild, daughter home, and she, and her relatives, are now determined to kill Joe. Joe tries to stop a homesteader he finds starting a fire on the Ponderosa and
Little Joe comes upon a gypsy girl. Frightened, she runs and falls becoming unconscious. When she wakes, they discover that she believes she is bewitched and so do her people who banished her. Her birth under a dark star has fostered this belief. Little Joe, smitten, must rescue her from this belief
Charlie Trent used to be an Army scout. Now he's the town drunk. Hoss helps him regain his self-esteem when he has him volunteer to lead a gold-bearing troop through the desert where there's very little water. An Army wagon train carrying gold is in Virginia City getting supplies. When their scout,
When 16-year-old Todd Grayson arrives from Boston to Virginia City, he is told that his father has been killed by Ben Cartwright. Ben shot Luke Grayson in self-defense, but Todd won't listen to this. The boy has only one thing in his head: to avenge his father by killing Ben Cartwright. The son of
A neutron star comes from a large star that has run out of fuel, and exploded as a supernova. First it becomes a radio pulsar and later becomes a magnetar. Or maybe it’s the other way around! NASA Science: http://science.nasa.gov/ Click here to see more videos: https://alugha.com/NASA
Angry with the way a beautiful deaf girl is treated by her father, a sheepherder living in a remote mountain cabin, Little Joe takes it upon himself to teach her sign language, so they can communicate better. His plan backfires when the young woman falls in love with him and the girl's brutish neigh
