Deep Space Atomic Clock (DSAC) - NASA
2023年7月26日 · Launched in June 2019, NASA's Deep Space Atomic Clock (DSAC) is a critical step toward enabling spacecraft to safely navigate independently in deep space rather than rely on the time-consuming process of waiting to receive directions from Earth.
What Is an Atomic Clock? - NASA
2019年6月19日 · Atomic clocks combine a quartz crystal oscillator with an ensemble of atoms to achieve greater stability. NASA’s Deep Space Atomic Clock will be off by less than a nanosecond after four days and less than a microsecond (one millionth of a second) after 10 years. This is equivalent to being off by only one second every 10 million years.
Time.is - exact time, any time zone
2024年11月12日 · Time.is displays exact, official atomic clock time for any time zone (more than 7 million locations) in 57 languages.
Deep Space Atomic Clock (DSAC) Overview - NASA
2015年5月20日 · Launched in June 2019, NASA’s Deep Space Atomic Clock is a critical step toward enabling spacecraft to safely navigate independently in deep space rather than rely on the time-consuming process of waiting to receive directions from Earth.
Five Things to Know about NASA’s Deep Space Atomic Clock
2019年6月4日 · An animated image of the Deep Space Atomic Clock, a new technology being tested by NASA that will change the way humans navigate the solar system. The precise timekeeper is targeted to launch from Florida in late June, aboard a SpaceX Falcon Heavy rocket.
What Is an Atomic Clock? - NASA Jet Propulsion Laboratory (JPL)
2019年6月19日 · NASA's Deep Space Atomic Clock could be the most stable atomic clock ever flown in space. But what does that mean, and what do clocks have to do with space navigation? The clock is ticking: A technology demonstration that could transform the way humans explore space is nearing its target launch date of June 24, 2019. Developed by NASA's Jet ...
Deep Space Atomic Clock - NASA Jet Propulsion Laboratory (JPL)
2019年6月25日 · The Deep Space Atomic Clock, or DSAC, was a technology demonstration of a small, ultra-precise, mercury-ion atomic clock launched into Earth orbit to test its potential as a next-generation tool for spacecraft navigation, radio science, and global positioning systems.
NASA Tests Atomic Clock for Deep Space Navigation
2018年2月6日 · It’s the Deep Space Atomic Clock (DSAC), an instrument being built for deep space exploration. Currently, most missions rely on ground-based antennas paired with atomic clocks for navigation. Ground antennas send narrowly focused signals to spacecraft, which, in turn, return the signal.
Working Overtime: NASA’s Deep Space Atomic Clock Completes Mission
2021年10月5日 · For more than two years, NASA’s Deep Space Atomic Clock has been pushing the timekeeping frontiers in space. On Sept. 18, 2021, its mission came to a successful end. The instrument is hosted on General Atomics’ Orbital Test Bed spacecraft that was launched aboard the Department of Defense Space Test Program 2 mission June 25, 2019.
Deep Space Atomic Clock Moves Toward Increased Spacecraft Autonomy
2021年6月30日 · NASA has perfected new navigation technology that would make self-driving spacecraft and GPS beyond the Moon a reality. The Deep Space Atomic Clock is the first atomic clock small and stable enough to fly on a spacecraft beyond Earth's orbit.
NASA Extends Deep Space Atomic Clock Mission
2020年6月24日 · The Deep Space Atomic Clock mission set out to bring the stability of a ground-based atomic clock to one small enough and tough enough to fly in space. The team has now demonstrated that the clock drifts by less than a nanosecond after four days, which adds up to less than one millionth of a second after 10 years and one full second every 10 ...
Deep Space Atomic Clock | NASA Jet Propulsion Laboratory (JPL)
2015年4月27日 · NASA is making great strides to develop the Deep Space Atomic Clock, or DSAC for short. The clock is being readied to fly and validate a miniaturized, ultra-precise mercury-ion atomic clock that is orders of magnitude …
Deep Space Atomic Clock sets record in 1st test run
2021年7月2日 · NASA said its Deep Space Atomic Clock could “revolutionize” deep space navigation. A compact design is a key requirement for the technology demonstration.
Deep Space Atomic Clock Technology Demonstration Mission Results - NASA ...
The Deep Space Atomic Clock (DSAC), a NASA Technology Demonstration Mission, was launched into low-Earth orbit on June 25, 2019 as a hosted payload aboard General Atomics’ Orbital Test Bed (OTB) spacecraft.
This Atomic Clock Will Transform Deep Space Exploration
2021年10月19日 · Ely and Burt are planning to send an even smaller version of their clock to hitch a ride on NASA’s VERITAS mission, which will head to Venus near the end of the decade.
The Deep Space Atomic Clock just passed its first test - Science News
2021年6月30日 · NASA’s Deep Space Atomic Clock, which launched on a satellite in June 2019, outperformed all other clocks in space during its first year in orbit around Earth.
Five Things to Know about NASA's Deep Space Atomic Clock
2019年6月4日 · An animated image of the Deep Space Atomic Clock, a new technology being tested by NASA that will change the way humans navigate the solar system. The precise timekeeper is targeted to launch from Florida in late June, aboard a SpaceX Falcon Heavy rocket.
Demonstration of a trapped-ion atomic clock in space - Nature
2021年6月30日 · Operating in space, NASA’s Deep Space Atomic Clock, a trapped-ion clock, is shown to have long-term stability and drift that are an order of magnitude better than current space clocks.
Current Time - 2024 - Bulletin of the Atomic Scientists
2024年1月23日 · Today, we once again set the Doomsday Clock at 90 seconds to midnight because humanity continues to face an unprecedented level of danger. Our decision should not be taken as a sign that the international security situation has eased.
How Scientists Captured the First Image of a Black Hole
2022年5月12日 · Scientists have obtained the first image of a black hole, using Event Horizon Telescope observations of the center of the galaxy M87. The image shows a bright ring formed as light bends in the intense gravity around a black hole that is 6.5 billion times more massive than the Sun. Credit: Event Horizon Telescope Collaboration.
National Institute of Standards and Technology | NIST
UTC is always displayed as a 24-hour clock. NIST promotes U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve our quality of life.
NASA SVS | 2024 Path of Totality - NASA Scientific Visualization …
2024年2月13日 · This visualization closely follows the Moon's umbra shadow as it crosses North America during the April 8, 2024 total solar eclipse. It covers the one hour and 50 minutes between 10:57 a.m. Pacific Standard Time and 4:47 p.m. Atlantic Daylight Time. Annotations include a running clock and the location of the center of the shadow. Everyone within the dark …
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