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In part, by observing the effects of things they cannot see directly (like the way quarks turn into subatomic particles, which cause detectable changes); or by using observations to confirm what mathematical models have predicted should happen (such as when Stephen Hawking determined that black holes must give off energy; the phenomenon is now called Hawking radiation in his honor).

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15y ago

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How have telescopes changed since they were invented?

They have changed because now there is a telescope in space called the "Hubble". I can see things that regular telescopes on Earth cannot see.


Why can scientists see a star explode but cannot hear it?

Sound waves cannot propagate through the vacuum of space. Scientists observe explosions of stars through telescopes that detect different forms of electromagnetic radiation, such as light, X-rays, and gamma rays. These observations provide valuable information about the event, even though sound waves are not involved.


What is sunshine abstract or not?

Not. The noun 'sunshine' is a concrete noun, a word for a physical thing that can be seen and its warmth felt. Abstract nouns are word for things that your five senses cannot detect. You can't see them, hear them, smell them, taste them, or touch them. They are words for things that you know, learn, think, understand, or feel emotionally.


Are there any species living in Jupiter?

No one know because no one ever went to Jupiter. It's amosphere is always covered in clouds and storms, so we cannot see. Scientists tend to think that Jupiter has actualy no surface. There might be living some species like bacteria and viruses... but probably no plants or animals.


How do scientists know about the moon?

Scientists study the moon using a combination of telescopes, spacecraft, and lunar missions. They analyze data collected from these missions to learn about the moon's composition, structure, and history. Scientists also use remote sensing techniques to gather information about the moon's surface features and geological processes.