122081 comments

• Comment Link
  
  Alonzojeats

  Wednesday, 23 April 2025 09:54

  Lunar clockwork
  What scientists know for certain is that they need to get precision timekeeping instruments to the moon.
  kraken зеркало
  Exactly who pays for lunar clocks, which type of clocks will go, and where they’ll be positioned are all questions that remain up in the air, Gramling said.
  
  “We have to work all of this out,” she said. “I don’t think we know yet. I think it will be an amalgamation of several different things.”
  https://kra30c.cc
  kraken darknet
  Atomic clocks, Gramling noted, are great for long-term stability, and crystal oscillators have an advantage for short-term stability.
  “You never trust one clock,” Gramling added. “And you never trust two clocks.”
  
  Clocks of various types could be placed inside satellites that orbit the moon or perhaps at the precise locations on the lunar surface that astronauts will one day visit.
  
  As for price, an atomic clock worthy of space travel could cost around a few million dollars, according Gramling, with crystal oscillators coming in substantially cheaper.
  
  But, Patla said, you get what you pay for.
  
  “The very cheap oscillators may be off by milliseconds or even 10s of milliseconds,” he added. “And that is important because for navigation purposes — we need to have the clocks synchronized to 10s of nanoseconds.”
  
  A network of clocks on the moon could work in concert to inform the new lunar time scale, just as atomic clocks do for UTC on Earth.
  
  (There will not, Gramling added, be different time zones on the moon. “There have been conversations about creating different zones, with the answer: ‘No,’” she said. “But that could change in the future.”)
• Comment Link
  
  ремонт техники в мск

  Wednesday, 23 April 2025 09:38

  Профессиональный сервисный центр по ремонту бытовой техники с выездом на дом.
  Мы предлагаем:ремонт бытовой техники в мск
  Наши мастера оперативно устранят неисправности вашего устройства в сервисе или с выездом на дом!
• Comment Link
  
  ремонт техники в мск

  Wednesday, 23 April 2025 09:21

  Профессиональный сервисный центр по ремонту бытовой техники с выездом на дом.
  Мы предлагаем:сервисные центры по ремонту техники в мск
  Наши мастера оперативно устранят неисправности вашего устройства в сервисе или с выездом на дом!
• Comment Link
  
  BrandonFob

  Wednesday, 23 April 2025 09:10

  Space, time: The continual question
  If time moves differently on the peaks of mountains than the shores of the ocean, you can imagine that things get even more bizarre the farther away from Earth you travel.
  Площадка кракен
  To add more complication: Time also passes slower the faster a person or spacecraft is moving, according to Einstein’s theory of special relativity.
  
  Astronauts on the International Space Station, for example, are lucky, said Dr. Bijunath Patla, a theoretical physicist with the US National Institute of Standards and Technology, in a phone interview. Though the space station orbits about 200 miles (322 kilometers) above Earth’s surface, it also travels at high speeds — looping the planet 16 times per day — so the effects of relativity somewhat cancel each other out, Patla said. For that reason, astronauts on the orbiting laboratory can easily use Earth time to stay on schedule.
  https://kra30c.cc
  kraken войти
  For other missions — it’s not so simple.
  
  Fortunately, scientists already have decades of experience contending with the complexities.
  
  Spacecraft, for example, are equipped with their own clocks called oscillators, Gramling said.
  
  “They maintain their own time,” Gramling said. “And most of our operations for spacecraft — even spacecraft that are all the way out at Pluto, or the Kuiper Belt, like New Horizons — (rely on) ground stations that are back on Earth. So everything they’re doing has to correlate with UTC.”
  But those spacecraft also rely on their own kept time, Gramling said. Vehicles exploring deep into the solar system, for example, have to know — based on their own time scale — when they are approaching a planet in case the spacecraft needs to use that planetary body for navigational purposes, she added.
  
  For 50 years, scientists have also been able to observe atomic clocks that are tucked aboard GPS satellites, which orbit Earth about 12,550 miles (20,200 kilometers) away — or about one-nineteenth the distance between our planet and the moon.
  
  Studying those clocks has given scientists a great starting point to begin extrapolating further as they set out to establish a new time scale for the moon, Patla said.
  
  “We can easily compare (GPS) clocks to clocks on the ground,” Patla said, adding that scientists have found a way to gently slow GPS clocks down, making them tick more in-line with Earth-bound clocks. “Obviously, it’s not as easy as it sounds, but it’s easier than making a mess.”
• Comment Link
  
  сервисные центры москвы

  Wednesday, 23 April 2025 09:09

  Профессиональный сервисный центр по ремонту бытовой техники с выездом на дом.
  Мы предлагаем:сервис центры бытовой техники москва
  Наши мастера оперативно устранят неисправности вашего устройства в сервисе или с выездом на дом!
• Comment Link
  
  ремонт бытовой техники в москве

  Wednesday, 23 April 2025 08:58

  Профессиональный сервисный центр по ремонту бытовой техники с выездом на дом.
  Мы предлагаем:сервисные центры по ремонту техники в мск
  Наши мастера оперативно устранят неисправности вашего устройства в сервисе или с выездом на дом!
• Comment Link
  
  Fertility clinic West Texas

  Wednesday, 23 April 2025 08:48

  I think that everything typed made a great deal of
  sense. However, think about this, suppose you were to write a awesome headline?
  I ain't suggesting your content is not good, but
  what if you added a post title that makes people desire more?
  
  I mean NOTICIA 2 is a little boring. You might glance at Yahoo's
  home page and watch how they create post titles to get people interested.
  You might try adding a video or a related picture or
  two to grab people interested about everything've written. In my
  opinion, it would bring your posts a little bit more interesting.
• Comment Link
  
  Anya100pr

  Wednesday, 23 April 2025 08:36

  Hello pals!
  I came across a 103 very cool site that I think you should check out.
  This resource is packed with a lot of useful information that you might find helpful.
  It has everything you could possibly need, so be sure to give it a visit!
  https://babyfoot-deutschland.de/tipps-fur-casino/die-aufregende-welt-des-poker-tipps-fur-einsteiger/
• Comment Link
  
  طرح جابر

  Wednesday, 23 April 2025 07:59

  Wow, marvelous blog format! How long have you ever been blogging for?
  you make blogging look easy. The total look of your site
  is excellent, as smartly as the content material!
• Comment Link
  
  قیمت کانکس ویلایی

  Wednesday, 23 April 2025 07:58

  Excellent post. I was checking continuously this blog and I am impressed!
  Very helpful info particularly the last part :) I care for such information a lot.
  I was looking for this particular information for a very
  long time. Thank you and best of luck.