Libro de Visitas

Jeffreyfoums

16 Apr 2025 - 09:07 am

Lunar clockwork
What scientists know for certain is that they need to get precision timekeeping instruments to the moon.
kraken тор
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 ссылка
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.”)

Virgilcoppy

16 Apr 2025 - 09:05 am

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.
Кракен даркнет
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 официальный сайт
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.”

Tolikspela

16 Apr 2025 - 08:54 am

darknet drug links dark web drug marketplace

Donalddiago

16 Apr 2025 - 08:30 am

darknet market lists darkmarket link

Josepharoup

16 Apr 2025 - 08:09 am

FilmHub is a hub for film lovers who want fresh recommendations.
What’s inside:
A perfect ten for every topic: From biopics to movies for rainy days.
Streaming links: Direct links to Netflix.
Behind-the-scenes footage: Get a taste before watching.
HQ posters: Perfect for social media shares.
No spoilers — just straight-to-the-point lists.
Explore 500+ themes at https://wakelet.com/@cinepicker

Dondoneurox

16 Apr 2025 - 05:44 am

best darknet markets dark market 2025

Rabynutty

16 Apr 2025 - 05:06 am

tor drug market dark web drug marketplace

Keithedugh

16 Apr 2025 - 04:44 am

Coocooby.com – Affordable Online Store for Fashion, Gadgets & Home Essentials in the USA ������������
If you're looking for a reliable online store in the USA that offers affordable fashion, smart home gadgets, and must-have tech accessories, then look no further than Coocooby.com.

✅ What is Coocooby?
Coocooby is an American-based eCommerce store located in Colorado, USA, offering a wide range of products to make your life easier, more stylish, and budget-friendly. Whether you're shopping for clothes, home tools, or tech gear – Coocooby has something for everyone.

������ Why Shop at Coocooby.com?
������ Trendy fashion for men & women – stylish, comfy & affordable

������ Smart home gadgets – organize your space with ease

������ Tech accessories – useful and sleek for daily use

������️ Weekly deals & special offers

������ Fast and reliable shipping across the USA

������ Trusted by Shoppers Across the US
With hundreds of satisfied customers, Coocooby is becoming a favorite destination for those who love budget-friendly shopping without compromising on quality.

������ Check it out today at: www.coocooby.com
������ Contact: coocoobystore@gmail.com | ☎️ +1 (719) 203-2258
������ Business Address: Colorado, United States

Donaldwap

16 Apr 2025 - 03:45 am

Americans nearing retirement and recent retirees said they were anxious and frustrated following a second day of market turmoil that hit their 401(k)s after President Donald Trump’s escalation of tariffs.

kra28 cc
As the impending tariffs shook the global economy Friday, people who were planning on their retirement accounts to carry them through their golden years said the economic chaos was hitting too close to home.

kraken33
Some said they are pausing big-ticket purchases and reconsidering home renovations, while others said they fear their quality of life will be adversely affected by all the turmoil.

“I’m just kind of stunned, and with so much money in the market, we just sort of have to hope we have enough time to recover,” said Paula, 68, a former occupational health professional in New Jersey who retired three years ago.

Paula, who spoke on the condition of anonymity because she feared retaliation for speaking out against Trump administration policies, said she was worried about what lies ahead.
https://kraken16at.vip
“What we’ve been doing is trying to enjoy the time that we have, but you want to be able to make it last,” Paula said Friday. “I have no confidence here.”

Trump fulfilled his campaign promise this week to unleash sweeping tariffs, including on the United States’ largest trading partners, in a move that has sparked fears of a global trade war. The decision sent the stock market spinning. On Friday afternoon, the broad-based S&P 500 closed down 6%, the tech-heavy Nasdaq dropped 5.8%, and the Dow Jones Industrial Average fell more than 2,200 points, or about 5.5%.

Pingavarf

16 Apr 2025 - 03:26 am

dark web link darknet sites