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
The Cartwrights try to disprove the validity of a Spanish land grant to stop the De La Cuesta family from seizing part of the Ponderosa and all of the Carson Valley settlers' homestead lands. The episode opens with a settler being evicted from his land by some Spanish vacqueros. When the couple ins
Lord and Lady Dunsford arrive at the Ponderosa to visit their old friend Ben. Adam finds himself the object of Lady Dunsford's attentions when she deems him to be a braver man than her husband. Adam then takes the couple on a hunting trip, where Lord Dunsford freezes while attempting to shoot a coug
Adam rides up on some Indians wanting to harm a white woman they believed was a mountain spirit. He kills them but not before they wound him. The woman nurses him back to health but the rest of the tribe is still out there looking for her. While traveling, Adam is wounded by Indians and left for de
End of the World is a 1977 Science Fiction film American film directed by John Hayes. Professor Andrew Boran (Kirk Scott) is a research scientist who discovers strange radio signals in outer space that appear to originate from Earth. The signals seem to predict natural disasters that are occurring
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
Adam, Hoss, and new friend Sam Board act as escorts for a wagon train of Quakers who are heading to California to purchase land for their settlement. While Adam falls for the group leader's daughter, Reginia, Board plots to rob the group of its life savings. A wagon train of Quakers from Ohio are p
The Cartwrights take young Billy Allen to the Ponderosa following the death of his mother. Hoss is the only one that is able to penetrate the boy's hostility and bitterness. As the two begin to get close, Billy's father Vance breaks out of prison and comes for the boy. A young boy named Billy Allen
Ben and Adam are locked in jail, about to hung for a crime they didn't commit. Joe and Hoss must find out why the witnesses to the alleged crime have perjured themselves before the execution takes place. They receive help from an unexpected source, a drifter called Lassiter who is searching for the
Gunnar Borgstrom is the leader of a vicious band called the Commancheros. They burn houses, kill people and steal anything of value. When the Commancheros get to Nevada, Gunnar decides to visit his relatives, the Cartwrights. Meanwhile the gang capture Little Joe and his girlfriend. When Gunnar retu
