apollo astronauts who stepped on the moon have kept some large mirrors there. collect information about how the distance to the moon is measured using these.
Mohammed
Guys, does anyone know the answer?
get apollo astronauts who stepped on the moon have kept some large mirrors there. collect information about how the distance to the moon is measured using these. from screen.
Apollo astronauts who stepped on the moon have kept some large mirrors there. Collect information about how the distance to the moon is measured using these.
Q.1 of chapter 16, 16. Reflection of Light - MHB - Science (New) book. Apollo astronauts who stepped on the moon have kept some large mirrors there. Collect information about how the distance to the moon is measured using these.
Book: MHB - Science (New)
Chapter: 16. Reflection of Light
Subject: Physics - Class 8th
Q. No. 1 of Project
Listen NCERT Audio Books to boost your productivity and retention power by 2X.
Learning from what Apollo astronauts left on the moon
In the 1960s and ’70s, Apollo astronauts left trash, mementos and science experiments on the moon. Researchers want to study and preserve the relics.
SPACE
Learning from what Apollo astronauts left on the moon
Learning from what Apollo astronauts left on the moon Fifty years ago, astronauts left more than footprints on Earth’s lunar neighbor
This photo, taken in 1969 by Astronaut Neil Armstrong, shows Astronaut Buzz Aldrin walking on the moon during the Apollo 11 mission. Apollo astronauts left a lot on the moon’s surface, from scientific instruments to trash.
NASA
Share this:
Email Facebook Twitter Pinterest Reddit Google Classroom Print By Maria Temming
October 3, 2019 at 5:45 am
Science News for Students is celebrating the 50th anniversary of the moon landing, which passed in July, with a three-part series about Earth’s moon. In part one, Science News reporter Lisa Grossman visited rocks brought back from the moon. Part two explores what astronauts left on the moon. Look for part three in November, and check out our archives for this story about Neil Armstrong and his pioneering 1969 moonwalk.Fifty years ago, astronauts first walked on the moon. Part of NASA’s Apollo program, they kicked off six missions to visit Earth’s lunar neighbor. Once on the moon, Apollo astronauts had two main goals: Get themselves and the moon rocks they gathered home safely.
Edwin E. Aldrin Jr. moves toward a position to deploy two parts of the Early Apollo Scientific Experiments Package (EASEP) during the Apollo 11 lunar landing. The Passive Seismic Experiments Package (PSEP) is in his left hand. In his right hand is the Laser Ranging Retro-Reflector (LR3). Astronaut Neil A. Armstrong, commander, took this photograph using a lunar surface camera.
NASA
That meant making space on cramped lunar modules for around 360 kilograms (about 800 pounds) of moon samples. Anything they didn’t need for the ride home got tossed — cameras, hammocks, boots and trash. They even ditched big stuff like moon buggies and launchpads.
But the astronauts left more than trashed castoffs. The crews marked their visits with six American flags and plenty of keepsakes. They also left behind about a dozen experiments to keep tabs on the moon. One still runs today.
These experiments were important parts of Apollo, says Noah Petro. He is based at NASA’s Goddard Space Flight Center in Greenbelt, Md. There he works as a project scientist for the Lunar Reconnaissance Orbiter mission. Its aim has been to map the moon.
Back in the Apollo era, the experiments didn’t get much attention, Petro notes. That’s because the big story was sending humans to the lunar surface.
When we think of Apollo’s 50-year legacy, most of us aren’t picturing astronaut junk gathering space dust. But nations are planning new ventures to the moon. So researchers are now thinking about how to prevent future lunar visitors from erasing the marks of humans’ first footsteps beyond Earth.
Setting up a lunar lab
The six moon missions ran from 1969 to 1972. Apollo crews spent a total of nearly 80 hours exploring the lunar surface. They gathered rocks, took photos of the moon’s surface and did many types of experiments. Astronauts caught particles of the solar wind with metal foil. They even set off explosives to measure the resulting tremors.
Preserving remnants of human ‘culture’ on the moon
The first mission to the moon, Apollo 11, planted solar-powered seismometers. These devices detect and measure moonquakes — tremors that pass through the moon. The astronauts also left behind mirrors. When paired with lasers on Earth, the mirrors can be used to precisely measure the distance between Earth and the moon.
Astronauts left more elaborate setups during other Apollo missions. Some of the nuclear-powered devices collected data through 1977. As NASA decided to focus on other projects, it pulled the plug on the whole operation.
The data sat unstudied for years, Petro says. But within the last decade, a new generation of scientists has taken up the torch. They are analyzing Apollo observations to answer some lingering questions.
Solving old mysteries
This task isn’t as simple as picking up where 1970s scientists left off. That’s what Seiichi Nagihara discovered. A geophysicist at Texas Tech University in Lubbock, he set out to solve a decades-old puzzle about the moon’s temperature.
On Apollo 15 and 17, astronauts installed thermometers in the lunar surface. These took the moon’s temperature at various depths and sent those data back to Earth. Apollo-era scientists reviewed data collected through 1974. The results showed something odd. The moon’s temperature just beneath the surface was slowly rising.
This image of the Apollo 17 landing site shows tracks made by astronauts (horizontal lines). Astronaut activity kicked up darker soil, which absorbed more sunlight than the surrounding terrain. That probably caused warming about a meter (3 feet) below the moon’s surface.
Apollo astronauts who stepped on the moon have kept some large mirrors there . Collect information about how the distance to the moon is measured using these .
Apollo astronauts who stepped on the moon have kept some large mirrors there . Collect information about how the distance to the moon is measured using these
Apollo astronauts who stepped on the moon have kept some large mirrors there . Collect information about how the distance to the moon is measured using these .
Video Player is loading.
Advertisement
TARGET PUBLICATION-REFLECTION OF LIGHT-EXERCISE
20 VIDEOS ADVERTISEMENT
Ab Padhai karo bina ads ke
Khareedo DN Pro and dekho sari videos bina kisi ad ki rukaavat ke!
1 day ₹5 ₹1 ₹7 / week Buy 1 month ₹149 ₹49 ₹49 / month Buy 1 year ₹749 ₹365 ₹30 / month Buy Answer
Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.
Related Videos
BOOK - TARGET PUBLICATION
CHAPTER - MEASUREMENT AND EFFECTS OF HEAT
EXERCISE - EXERCISE 121 videos
MEASUREMENT AND EFFECTS OF HEAT
BOOK - TARGET PUBLICATION
CHAPTER - SOUND EXERCISE - EXERCISE 85 videos SOUND
चंद्रमा पर खड़े अंतरिक्ष यात्री को आकाश प्रतीत होता है
95019921 01:36
The first astronaut to set foot on the moon was
109752480 Text Solution
माना पृथ्वी की चन्द्रमा से दुरी 38400 किमी है तथा चन्द्रमा द्वारा पृथ्वी पर किसी व्यक्ति की आँख पर मापा गया कोण 31' है । चन्द्रमा की त्रिज्या ज्ञात कीजिए ।
121320367 06:28
A laser beam is sent to the moon and reflected back to earth by a mirror placed on the moon by an astronaut. If the moon is at 3,84,000 km distance from earth, how long does it take the light to make the round trip?
184401234 01:18
Why do astronauts have to wear protective suits when they are on the surface of moon?
201230615 03:26
How will measure the diameter of the Moon using parallax method?
201241717 06:10
Collect information about the path of revolution of moon around the earth and write a report.
517567775 02:18
A laser beam is sent to the moon, where it reflects on the mirror held by the astronaut and arrives on Earth. If the distance of the moon from the earth is 38400 km. How long will Prakash take in this journey?
642954777 03:17
एक लेजर पुंज, चंद्रमा की ओर भेजी जाती है और एक अंतरिक्ष यात्री द्वारा चंद्रमा पर रखे गए दर्पण द्वारा पृथ्वी पर वापस परावर्तित होती हैI यदि चंद्रमा, पृथ्वी से 3,84,000 km दूरी पर है, तो एक पूरा चक्कर लगाने में प्रकाश को कितना समय लगेगा?
644155402 03:27
मानव को चंद्रमा तक ले जाने वाले अपोलो रॉकेट में प्रयोग किया ईंधन था
644580602 Text Solution
मानव को चन्द्रमा तक ले जाने वाले अपोली रॉकेट में प्रयोग किया ईंधन था-
644584012 Text Solution
A laser beam is sent to the moon and reflected back to earth by a mirror placed on the moon by an astronaut. If the moon is at 3,84,000 km distance from earth, how long does it take the light to make the round trip?
645059875 02:08
A laser beam is sent to the moon and reflected back to earth by a mirror placed on the moon by an astronaut. If the moon is 384000 km from the earth. how long does it take the light to make the round trip?
645750700 Text Solution
What is unusual about neptune's large moon?
646306237 01:46
The first Indian astronaut to step on the moon was
646423568 02:11
A laser beam is sent to the moon and reflected back to earth by mirror placed on the moon by an astronaut. If the moon is 384000km from the earth, how long does it take the light to make the round trip?
647332208 Text Solution
Guys, does anyone know the answer?