He Starship SN6 cylindrical vehicle rose into the air above SpaceX's Boca Chica test site, so it was recorded in the next video.
The vehicle, designed for eventual trips to the Moon and Mars, performed a brief uncrewed test flight on September 3 in Texas.
SpaceX
This is the second flight test at 150 meters high carried out by this launcher, similar to the one carried out on August 4 by a similar model. A single Raptor engine was used in the test..
Second 150m flight test of Starship pic.twitter.com/ROa0kQZXLI
— SpaceX (@SpaceX) September 4, 2020
Starship SN6 is the latest in a line of prototypes that SpaceX has used as testbeds for the technologies needed for a massive, fully reusable launch system for deep space missions.
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The news
See the glorious flight of SpaceX's Starship prototype rocket
was originally published in
Xataka Science
by
Sergio Parra
.
The so-called Sputnik V, based on two cold viruses, induces a hopeful immune response in a test with 76 people
El microchip de Elon Musk sorprende menos que otras innovaciones técnicas y actuales de la neurociencia
Los juegos de rol han propiciado la aparición de dados con más -o menos- de seis caras y numerosas posibilidades combinatorias
The COVID-19 It has changed many of our habits, it has reconfigured the lifestyle of entire cities, but it has also done so for non-human species: like rats.
These, dependent on leftover restaurant food, for example, are suddenly experiencing shortages; a scarcity that pushes them to drastic solutions that involve bloody battles between rats, cannibalism and infanticide.
Resources
Rats whose food sources have disappeared will not only move to other colonies and come into conflict with other rats over scarce resources, but They will eat each other to survive, including the offspring.
Residents of dense urban areas and some rural areas of the United States have lived with these vermin, but sightings in some cities have increased in recent weeks due to the pandemic.
In New Orleans, where Louisiana's governor imposed a stay-at-home order that forced many restaurants to close, particularly those in popular tourist areas like the French Quarter, a viral video published in March showed scores of rats taking to the streets to look for food. And officials say social distancing is to blame.
In fact, Claudia Riegel, director of the New Orleans Mosquito, Termite and Rodent Control Board, declared in it The Times-Picayune that the city is preparing aggressive pest control measures.
Washington DC is also taking steps to combat rodent problems. The mayor Muriel Bowser closed restaurants and other businesses but designated pest control workers as essential. Before the pandemic, the city had already aggressively implemented pest control measures, including the use of feral cats.
In the last 30 days, the city has received almost 500 calls related to rodents, according to 311 data (The 311 emergency number is used to report incidents where immediate police presence is not required). In nearby Baltimore, which has a robust rat eradication program, city data shows there were about 11,000 'proactive' calls or online 311 requests about rats in the same period.
Rats have a great ability to reproduce. From 2 months of age they can reproduce. They can reproduce up to 13 times a year and have up to 14 rats per litter. The female rat is capable of preserving the male's semen in her body to self-fertilize again once she gives birth to the litter. Maybe this pandemic will end up reducing their numbers for the first time in a long time.
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The news
War, cannibalism and infanticide: the solutions that rats find to survive in the COVID-19 era
was originally published in
Xataka Science
by
Sergio Parra
.
According to a new analysis From existing data representing a new milestone in the Search for Extraterrestrial Intelligence (SETI), less than 0.04% of star systems have the potential to host advanced civilizations with equivalent radio technology or slightly more advanced than 21st century humans.
A collaborative research team at the University of Manchester has discovered an analytical breakthrough that has dramatically expanded the search for extraterrestrial life from 1,400 stars to 280,000, increasing the number of stars analyzed by a factor of more than 200.
Only intelligent life
This new analysis, then, could only locate intelligent and technically advanced civilizations that use radio waves as a form of communication; for example, they could not detect "simple" life or non-technical civilizations.
According to the study leader, Michael Garrett, from the University of Manchester in the United Kingdom, Reviewing the catalog produced by the European Space Agency's (ESA) Gaia spacecraft, stars were selected at much greater distances (up to about 33,000 light years) than the original sample of nearby stars , being able to expand the number of stars studied from 1,327 to 288,315:
We now know that fewer than one in every 1,600 stars closer than about 330 light years host transmitters a few times more powerful than the most powerful radar we have here on Earth. Inhabited worlds with much more powerful transmitters than we can currently produce must be even rarer.
Furthermore, the expanded sample includes not only a wide range of main sequence stars, but also numerous giant stars and white dwarfs.
The Kardashov scale is a method to measure the degree of technological evolution of a civilization, proposed in 1964 by the Russian astrophysicist Nikolai Kardashov. It has three categories, called Type I, II and III, based on the amount of energy that a civilization is capable of using from its environment. Generally speaking, a Type I civilization has achieved mastery of the resources of its home planet, Type II of its planetary system, and Type III of its galaxy. However, perhaps things don't work that way: because we cannot understand advanced civilizations, as criticized in Evolving the Alien: The Science of Extraterrestrial Life, from the biologist Jack Cohen and the mathematician Ian Stewart.
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The news
Less than 0.04% of star systems would have the potential to host advanced civilizations
was originally published in
Xataka Science
by
Sergio Parra
.