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ExploraTour: A Peek into the Lives of the Stars - Windows to the Universe
ExploraTour: A Peek into the Lives of the Stars
Click on image for full size
the Hubble Space Telescope, reproduced with permission from
Searching M4 for White Dwarfs.
The faint objects circled in the image on
the left are white dwarfs in the globular cluster, M4. This image was
taken by the Hubble Space Telescope and is 0.63 light years on a side.
The brighter objects are yellow stars (much like the sun) and cool red
stars.
If you click on this image, you will see a larger view of the globular
cluster M4, 47 light years on a side and 7,000 light years away. M4 is
predicted to contain some 40,000 white dwarfs out of its 100,000 stars.
You might also be interested in: STAGE 4: White Dwarf When the fuel is used up, there is nothing to hold the star's layers up against gravity and the star begins to collapse. Gravity squeezes the star down into a very small size. As
...more Even though the sleeping man is no longer on the bed, you can still see where he was lying down. The heat from his body warmed up the bed sheets which are now radiating infrared light toward your eyes.
...more All warm objects (not just people) radiate in the infrared. Warmer objects give off more infrared radiation. Very hot objects radiate other types of light in addition to infrared. Click on the picture
...more Your eye is a wonderful detector of visible light. Different frequencies of light produce different sensations in the eye which we interpret as colors. Our eyes detect light by using light sensitive components
...more Imagine you found a pair of special glasses that not only gave you telescopic vision but gave you the ability to see all forms of radiant energy. The universe in visible light contains all the familiar
...more This is a volcano on the island of Miyake in Japan. It has erupted, sending hot lava and ash into the air, a total of ten times. The time after one eruption until the next occurred was about twenty years
...more This is a picture of a galaxy in visible light. A galaxy is a large number of stars, some like our sun, some bigger, some smaller and all moving together through space. This galaxy is called Centaurus
...more