Which of the following planets is NOT a gas giant? a. Earth b. Jupiter c. Saturn d. Uranus 16. The sun gets its energy from a. burning fuel b. nuclear fusion c. shrinking due to gravity d. convection 17. The number of on any planet can be used to estimate how old the surface is.
Astronomy 10 Chapter 11 1. Both used to be normal stars but the white dwarf ran out of hydrogen, they are both subjected to gravitational theories. A Neutron star is a fluid of neutrons, as hot at its surface as the inside of the sun and has a greater magnetic field. 3. Because its density is so high, neutrons spin in the same way that electrons do so must obey the Pauli Exclusion Principle.
Pluto is a dwarf planet; it is the farthest planet from the sun. A dwarf planet is a planet that orbits around the sun. It has an orbit of 248 years that sometimes takes it inside Neptune’s orbit. Pluto is so cold that its oxygen and nitrogen, which is easy for us to breathe, is frozen solid there. This planet is two-thirds of our moon and it is the largest rock in the Kuiper belt.
Why is this significant |Carbon Dioxide | |(hint: see #1)? | | |Phobos is a “doomed” moon of Mars. Why is it doomed? |It’s spiraling towards mars and will eventually hit it | |What moon is the most volcanically active body in the solar |Lo, Jupiter | |system? Which planet does it orbit?
Sunspots and Flares Our Sun, the 5-billion-year-old star that sustains life here on Earth, powers photosynthesis in green plants and is ultimately the source of all food and fossil fuel. The connection and interaction between the Sun and Earth drive the seasons, currents in the oceans, weather and climate. With a core reaching a fiery 16 million degrees Kelvin (nearly 29 million degrees Fahrenheit), the Sun's surface temperature is so hot that no solid or liquid can exist there. As early as the fifth century B.C., the Chinese reported having observed dark spots on the sun. In 1960, Galileo Galilei of Italy, Johannes Fabricius of Holland, Christopher Scheiner of Germany, and Thomas Harriott of Englandeach independently
If light can’t escape from a black hole, then it must be invisible - therefore how can we know that the black holes exist? Black Holes, if theories of their existence are true, black holes are the most powerful force in the known physical universe. Many people are familiar with the term black hole, but few people actually know anything about them. A black hole forms as a result of a massive star running out of fuel to burn (Black Holes, Relativity, and Fate of the Universe by Eric Chaisson, p.193). Once the star is no longer exerting outward force by burning off gases, it begins to collapse under its own intense, inward gravity (Chaisson, p.193).
The theory of Black Holes and its process is one of the most unique studies of the universe, in that with each discovery made, we un-lock closed doors to knowledge of how the universe was made. In 1798 a French Mathematician Pierre Simon de Laplace came up with the first theory of a Black Hole. He agreed with Newton, that when enough mass is added to a star like the sun, the gravitational pull would become so great that the escape velocity would equal the speed of light. Therefore, the star would blink out and become an invisible star. More than a century later, Einstein, came up with the theory of relativity.
I. Gas Cloud A. Our sun, like all other stars in the universe, began its life as a cloud of dust and gas B. Immense clouds, spanning light-years, but very sparse (several hundred atoms per cubic cm) 1) Earth’s surface = 1.0x1017 or 100 quadrillion atoms per cubic cm—NASA C. The cloud begins to swirl and coalesce inwardly under the relentless force of gravity D. With collapse now under gravity’s pull, the dust and gas particles begin to generate frictional heat II. Protostar (100,000-50million years)—NASA A. The kinetic energy generated by these particles rubbing together (friction) releases infrared energy B.
Under The Astronomic International Union (IAU) definitions, there are eight planets in the Solar System. In order of increasing distance from the Sun, they are the four terrestrials, Mercury, Venus, Earth, and Mars, then the four gas giants, Jupiter, Saturn, Uranus, and Neptune. Originally, there were nine planets in the Solar System. Nowadays, Pluto has been considered as the dwarf planet. Six of the planets are orbited by one or more natural satellites.