1 What Is an Atomic Clock? by Arielle Samuelson (excerpt) Select the correct answer from the drop-down menu. n 2019, NASA introduced the Deep Space Atomic Clock In this excerpt, writer Arielle Samuelson, who has written extensively Read paragraphs 9 and 10. about NASA's Jet Propulsion Laboratory, explains why this new time machine" is important. (9) By space navigation standards, quartz crystal clocks aren't very stable. After only an hour, even the best-performing (1) Developed by NASA's Jet Propulsion Laboratory in Pasadena, quartz oscillators can be off by a nanosecond (one billionth of a second). After six weeks, they may be off by a full California, the Deep Space Atomic Clock is a serious upgrade to millisecond (one thousandth of a second), or a distance error of 185 miles (300 kilometers). That would have a huge impact the satellite-based atomic clocks that, for example, enable the GPS on your phone. on measuring the position of a fast-moving spacecraft. (2) Ultimately, this new technology could make spacecraft (10) Atomic clocks combine a quartz crystal oscillator with an ensemble of atoms to achieve greater stability. NASA's Deep navigation to distant locations like Mars more autonomous. But what is an atomic clock? How are they used in space navigation, Space Atomic Clock will be off by less than a nanosecond after four days and less than a microsecond (one millionth of a and what makes the Deep Space Atomic Clock different? Read second) after 10 years. This is equivalent to being off by only one second every 10 million years. on to get all the answers. Why do we use clocks to navigate in space? How does the author develop her point that atomic clocks are better than quartz crystal clocks for space navigation? (3) To determine a spacecraft's distance from Earth, navigators send a signal to the spacecraft, which then returns it to Earth. The author develops her point by The time the signal requires to make that two-way journey reveals the spacecraft's distance from Earth because the signal travels at a known speed (the speed of light) Reset Next (4) While it may sound complicated, most of us use this concept every day. The grocery store might be a 30-minute walk from your house If you know you can walk about a mile in 20 minutes @ 2024 Edmentum. All rights reserved CB Sign out 3 Jun 6 11:25 US * 0