Solar Orbiter (ESA):
The objective of this mission is to perform close-up, high resolution studies of the
Sun and its inner heliosphere. It is intensive to survive the harsh temperature and
carry its telescopes to just one-fifth of Earth's distance from t
To study the influence by the Sun on the heliosphere, NASA-ESA Ulysses mission
was created. The primary objective was to make measurements of the unexplored
regions above the Sun's poles. Other objectives included determination of the global
Olberss paradox is a fairly simple question, but its resolution suggests that the universe is finite in age.
What is the question?
Why is the sky dark at night?
If we can argue that the universe does not have an edge why cant it have a centre?
Nuclear Fusion: heat that is so strong nuclei can merge to form new elements (2 hydrogens form
o Light in stars is generated by a thermonuclear furnace in the Core
o 15 million K, 100x the density of water, 2 million bar pressure
At the start of the century most astronomers believed that our galaxy and the universe were identical.
William and Caroline (his sister) Herschel provided early measurements indicating that the Sun was at
the centre of the universe but later ref
Keys to Module 7:
The structure of the Milky Way galaxy
o The milky way is a spiral galaxy it contains about a million stars, the
majority of which are in the center bulge of the disk, however many,
like are Sun are in the spiral arms. Our gala
Keys to Module 8:
o Slowly moving matter with no mass that only interacts with gravity. The
movement of this dark matter is what made the clumping of matter possible
in the early universe and is what causes galaxies to stay together
Keys to Module 6:
The Hertzsprung -Russell Diagram: A diagram formed by two scientists that can help
determine the mass of stars.
o It plots the luminosity of the star against its heat and can therefore determine its
size and mass according to w