Mar 24, 2021 05:44 PM
(This post was last modified: Mar 24, 2021 08:10 PM by C C.)
Piece of Wright brothers' 1st plane now on Mars (old vehicles)
https://www.livescience.com/wright-broth...-mars.html
INTRO: When NASA’s Perseverance rover touched down on Mars in February, it carried a bit of the Wright brothers' first airplane with it. A swatch of fabric from the airplane, known as the Flyer, is secured beneath the solar panels of an experimental helicopter, which in turn is strapped to the underside of the rover, according to a statement from NASA. The helicopter, called Ingenuity, is attached to the rover for now, but soon, if all goes well, scientists will pilot the aircraft remotely over the surface of the Red Planet... (MORE)
Gravitational lenses could allow a galaxy-wide internet (travel)
https://www.universetoday.com/150671/gra...-internet/
INTRO: As Carl Sagan once said, “The sky calls to us. If we do not destroy ourselves, we will one day venture to the stars.” And our first emissaries to the stars will be robotic probes. These interstellar probes will be largely autonomous, but we will want to communicate with them. At the very least we will want them to phone home and tell us what they’ve discovered. The stars are distant, so the probes will need to make a very long-distance call.
Currently, we communicate with space probes throughout the solar system via the Deep Space Network (DSN). This is a collection of antenna stations located around the world. Each station has one large 70-meter dish and several smaller dishes. Such large radio dishes are necessary because the signals from a space probe are rather faint, and they grow fainter with increasing distance.
When we start sending probes to other stars, we’re going to need an interstellar communication network. Perhaps a galaxy-wide Internet. But we still don’t know how to make one. Although we can transmit powerful radio signals into space, the strength of these signals grows faint over stellar distances. Most of what we transmit couldn’t be detected beyond a few light years given our current technology. Several solutions have been proposed, such as using focused laser light, but a new study looks at using gravitational lensing to get the job done... (MORE)
https://www.livescience.com/wright-broth...-mars.html
INTRO: When NASA’s Perseverance rover touched down on Mars in February, it carried a bit of the Wright brothers' first airplane with it. A swatch of fabric from the airplane, known as the Flyer, is secured beneath the solar panels of an experimental helicopter, which in turn is strapped to the underside of the rover, according to a statement from NASA. The helicopter, called Ingenuity, is attached to the rover for now, but soon, if all goes well, scientists will pilot the aircraft remotely over the surface of the Red Planet... (MORE)
Gravitational lenses could allow a galaxy-wide internet (travel)
https://www.universetoday.com/150671/gra...-internet/
INTRO: As Carl Sagan once said, “The sky calls to us. If we do not destroy ourselves, we will one day venture to the stars.” And our first emissaries to the stars will be robotic probes. These interstellar probes will be largely autonomous, but we will want to communicate with them. At the very least we will want them to phone home and tell us what they’ve discovered. The stars are distant, so the probes will need to make a very long-distance call.
Currently, we communicate with space probes throughout the solar system via the Deep Space Network (DSN). This is a collection of antenna stations located around the world. Each station has one large 70-meter dish and several smaller dishes. Such large radio dishes are necessary because the signals from a space probe are rather faint, and they grow fainter with increasing distance.
When we start sending probes to other stars, we’re going to need an interstellar communication network. Perhaps a galaxy-wide Internet. But we still don’t know how to make one. Although we can transmit powerful radio signals into space, the strength of these signals grows faint over stellar distances. Most of what we transmit couldn’t be detected beyond a few light years given our current technology. Several solutions have been proposed, such as using focused laser light, but a new study looks at using gravitational lensing to get the job done... (MORE)