How NASA Uses Gravity and Radio Waves to Study Planets and Moons
The Deep Space Network, NASA’s international collection of giant radio antennas used to communicate with spacecraft at the Moon and beyond, helps scientists and engineers use gravity and radio science experiments to learn more about our planetary neighborhood.
After reaching a spacecraft reaches its destination, it uses radio antennas to communicate with the Deep Space Network, which in turn transmits radio signals back to the spacecraft. Every spacecraft travels in a predetermined path emitting radio signals as it orbits around its target. Scientists and engineers can infer the spacecraft's location and how fast it's going by measuring changes in the spacecraft's radio signal frequency. This is made possible by the Doppler effect, the same phenomenon that causes a siren to sound different as it travels towards and away from you.
The Doppler phenomenon is observed here when the spacecraft and the Deep Space Network antenna move in relation to each other. Differences between the frequency of radio signals sent by the spacecraft as it orbits and signals received on Earth give us details about the gravitational field of a planetary body. For example, if the gravity is slightly stronger, the spacecraft will accelerate slightly more. If gravity is slightly weaker, the spacecraft will accelerate slightly less. By developing a model of the planetary body's gravitational field, which can be mapped as a gravitational shape, scientists and researchers can deduce information about its internal structure.
The Deep Space Network was developed by and is managed by NASA’s Jet Propulsion Laboratory (JPL) in Southern California. The antennas of the Deep Space Network are the indispensable link to robotic explorers venturing beyond Earth. They provide the crucial connection for commanding our spacecraft and receiving never-before-seen images and scientific information on Earth, propelling our understanding of the universe, our solar system and ultimately, our place within it
-
35:24
Squaring The Circle w/ Randall Carlson
1 day ago#009 Are Sea Levels REALLY Rising? Pt 2 - Squaring the Circle: A Randall Carlson Podcast
25K46 -
14:23
Freakin' Reviews
1 day agoPan Wars! $90 Caraway vs $8 Martha Stewart!
31.5K14 -
4:21
ParisDemers
1 day agoScientific Trick That Increases Your Testosterone 400% In 7 Days!
40.7K13 -
16:30
CarlCrusher
1 day agoPsychic Witches Perform Conjuring Seance at Skinwalker's Evil Twin Ranch near Area 51
32.1K9 -
6:39
Tactical Advisor
1 day agoNEW CMMG BR4 (FIRST LOOK)
33.3K10 -
10:23
America Uncovered
22 hours agoThe IRS Has Gone On The Attack. And The Poor Still Suffer
42.2K20 -
30:43
TheTapeLibrary
16 hours ago $0.52 earnedThe TRUE Haunting of The Enfield Poltergeist (FULL PARANORMAL HORROR DOCUMENTARY)
43.3K30 -
4:45
Gamazda
1 day ago $3.36 earnedDragonForce - Through the Fire and Flames (Piano)
60.5K84 -
24:56
MYLUNCHBREAK CHANNEL PAGE
21 hours agoFinding Old World Pyramids?
54.2K63 -
16:20
Guns & Gadgets 2nd Amendment News
21 hours agoClarence Thomas DESTROYS Opinion Of Today's Anti-2A Ruling!.mp4
57.4K40