Light and Telescopes
One of the first people to study light was Ibn al-Haytham (known as Alhazen). He was a Muslim, living in Egypt in the early 11th Century. Alhazen is first person we know of who used the scientific method. He wanted to know why our eyes could see things.
Image
Credit
This work
by The Schools' Observatory
is licensed under All rights reserved
Cecilia Payne Gaposchkin
Occupation
Astronomer
Year born
1900
Research Areas
Stars, Spectroscopy
Image
Credit
This work
by Smithsonian Institution Archives, Accession 90-105, Science Service Records, Image No. SIA2009-1327
is licensed under All rights reserved
Sunrise and Sunset
The Sun appears above the horizon each day. This happens not because the Sun is moving, but because the Earth spins on its axis.
Image
Credit
This work
by Fraser Mummery
is licensed under Creative Commons Attribution 4.0 International
Investigate Day and Night
On Earth, night follows day and day follows night. But why?
Complete this fun investigation to find out!
Why Do Shadows Change Over Time?
Have you noticed that your shadow changes over time? The cartoon on this page shows why shadows change during the day.