|
|
 |
|
|
 |
|
What did Giotto tell us about comets?
|
|
In 1986, the Giotto space probe studied Halley's Comet. A comet consists of a lump of rock and ice called the nucleus, inside a cloud of gas and dust called the coma (inset). It also has a bright tail. Giotto's photographs show a nucleus measuring 8 kilometres by 12 kilometres. Its instruments found that the coma and tail are made of dust and water vapour.
|
| |
Previous:
Back
|
Book:
Best Ever Q&A
|
Section:
Space
|
Chapter:
Exploring the Heavens
|
|
|
|
 |
|
|
