How Do Telescopes Work? | NASA Space Place – NASA Science for Kids
spaceplace.nasa.gov
4 ideas
·344 reads
10
1
Learn more about scienceandnature with this collection
How to make sustainable choices in everyday life
Identifying ways to reduce waste and conserve resources
Understanding the impact of human actions on the environment
The telescope
A telescope is a tool that astronomers use to see objects from afar. Most telescopes use curved mirrors to focus light from the night sky.
The first telescopes focused light by using pieces of curved, clear glass called lenses. Today we use mirrors as they as lighter and easier to make perfectly smooth.
8
99 reads
The mirrors or lenses in a telescope are called "optics"
Powerful telescopes can see dim objects and objects that are really far away. To do that, the optics have to be really big. The bigger the mirrors or lenses, the more light the telescope can gather.
The mirrors and lenses of a telescope must be just the right shape to concentrate the light. They must be without spots, scratches or other flaws.
8
87 reads
A telescope made with lenses is called a refracting telescope
A lens bends light passing through it, like eyeglasses, to make faraway objects seem closer.
Thick lenses are more powerful but also very heavy. Heavy lenses are difficult to make and hold in the right place. Thicker glass also prevents more of the light from passing through. Because light is passing through the lens, the lens's surface has to be extremely smooth.
8
83 reads
A telescope that uses mirrors is called a reflecting telescope
A mirror can be very thin and a bigger mirror does not have to be thicker. Light is concentrated by bouncing off of the mirror that needs to be the correct curved shape.
Mirrors have their own problems. For example, the curved mirror in a telescope flips the image. It can be fixed by using other mirrors to flip it back.
8
75 reads
CURATED BY
More like this
4 ideas
What Is a Nebula? | NASA Space Place – NASA Science for Kids
spaceplace.nasa.gov
4 ideas
6 ideas
Explore the World’s
Best Ideas
200,000+ ideas on pretty much any topic. Created by the smartest people around & well-organized so you can explore at will.
An Idea for Everything
Explore the biggest library of insights. And we've infused it with powerful filtering tools so you can easily find what you need.
Knowledge Library
Powerful Saving & Organizational Tools
Save ideas for later reading, for personalized stashes, or for remembering it later.
Start
31 ideas
Start
44 ideas
# Personal Growth
Take Your Ideas
Anywhere
Organize your ideas & listen on the go. And with Pro, there are no limits.
Listen on the go
Just press play and we take care of the words.
Never worry about spotty connections
No Internet access? No problem. Within the mobile app, all your ideas are available, even when offline.
Get Organized with Stashes
Ideas for your next work project? Quotes that inspire you? Put them in the right place so you never lose them.
Start
47 ideas
Start
75 ideas
My Stashes
Join
2 Million Stashers
4.8
5,740 Reviews
App Store
4.7
72,690 Reviews
Google Play
Ashley Anthony
This app is LOADED with RELEVANT, HELPFUL, AND EDUCATIONAL material. It is creatively intellectual, yet minimal enough to not overstimulate and create a learning block. I am exceptionally impressed with this app!
“
Sean Green
Great interesting short snippets of informative articles. Highly recommended to anyone who loves information and lacks patience.
“
samz905
Don’t look further if you love learning new things. A refreshing concept that provides quick ideas for busy thought leaders.
“
Shankul Varada
Best app ever! You heard it right. This app has helped me get back on my quest to get things done while equipping myself with knowledge everyday.
“
Giovanna Scalzone
Brilliant. It feels fresh and encouraging. So many interesting pieces of information that are just enough to absorb and apply. So happy I found this.
“
Ghazala Begum
Even five minutes a day will improve your thinking. I've come across new ideas and learnt to improve existing ways to become more motivated, confident and happier.
“
Jamyson Haug
Great for quick bits of information and interesting ideas around whatever topics you are interested in. Visually, it looks great as well.
“
Laetitia Berton
I have only been using it for a few days now, but I have found answers to questions I had never consciously formulated, or to problems I face everyday at work or at home. I wish I had found this earlier, highly recommended!
“
Read & Learn
20x Faster
without
deepstash
with
deepstash
with
deepstash
Access to 200,000+ ideas
—
Access to the mobile app
—
Unlimited idea saving & library
—
—
Unlimited history
—
—
Unlimited listening to ideas
—
—
Downloading & offline access
—
—
Personalized recommendations
—
—
Supercharge your mind with one idea per day
Enter your email and spend 1 minute every day to learn something new.
I agree to receive email updates