Why Care About Water?
And just less than one percent of the planet's water is available to meet the daily drinking water, sanitation and food needs of nearly 7 billion people and millions of other species. more X Why Care About Water? Fresh Water Sustainability Water Pollution There is the same amount of water on Earth today as there was when the dinosaurs roamed
(4) Non-Apophis Conclusions Aspects of the study relevant to asteroids other than Apophis: The Standard Dynamical Model can misestimate impact risk for the more numerous sub-km objects preceded by close planetary encounter(s). Amplification of small trajectory offsets makes valid prediction across a close-encounter difficult without physical knowledge, but offers the potential to redirect the entire uncertainty region and has significant implications for costly spacecraft missions
The Moon And Tides
What are the different types of Tides When the sun and moon are aligned, there are exceptionally strong gravitational forces, causing very high and very low tides which are called spring tides, though they have nothing to do with the season. This happens because if we resolve the tidal forces at each point on the Earth into a local vertical and horizontal component, the horizontal components are not zero, and are directed towards the two points along the line connecting the Earth and the Moon's centers
WIND Spacecraft
Wind, together with Geotail, Polar, SoHO and Cluster, constitute a cooperative scientific satellite project designated the International Solar Terrestrial Physics (ISTP) program that aims at gaining improved understanding of the physics of solar terrestrial relations
The German astronomer Simon Marius claimed to have seen the moons around the same time, but he did not publish his observations and so Galileo is given the credit for their discovery. Ganymede is the largest moon in the solar system (larger than the planet Mercury), and is the only moon known to have its own internally generated magnetic field
HOW FAST IS THE MILKY WAY GALAXY MOVING WITHIN THE LOCAL GROUP OF GALAXIES? The Milky way Galaxy is just one galaxy in a group of galaxies called the Local Group. HOW FAST IS OUR SOLAR SYSTEM MOVING WITHIN THE MILKY WAY GALAXY? The sun is about 26,000 light-years from the center of the Milky Way Galaxy, which is about 80,000 to 120,000 light-years across (and less than 7,000 light-years thick)
You see, the first astronomical thing that any living creature likely notices is that, as seen from Earth, the Sun rises in the East each day and sets in the West. For example when in september the distance from the earth to mars is 20,000km but may be in June it can be decreares or increase to about 10,000 or 40,000 respectively
Why is there Life on Earth? - Bob the Alien's Tour of the Solar System
This is caused by the moderate amount of carbon dioxide in the planet's atmosphere, which is constantly refreshed whenever there is a volcanic eruption. However, its smaller presence on Earth is useful as it helps to moderate the planet's temperature and is absorbed by plants during photosynthesis to produce oxygen
Why do glaciations occur?
For example, when the orbit is highly elliptical, one hemisphere will have hot summers and cold winters; the other hemisphere will have warm summers and cool winters. Variation in the Earth's orbit through time causes changes in the amount and distribution of sunlight (and other solar radiation) reaching the Earth's surface
A Matter of Degrees: How Does the Tilt of Earth's Axis Affect the Seasons?
Geoscientists seek to better understand our planet, and to discover natural resources, like water, minerals, and petroleum oil, which are used in everything from shoes, fabrics, roads, roofs, and lotions to fertilizers, food packaging, ink, and CD's. If you have any comments (positive or negative) related to purchases you've made for science fair projects from recommendations on our site, please let us know
How fast, in MPH does the earth rotate?
Why does the earth rotate so slowly? How fast is free fall, is it a constant speed or does your speed increase as you get closer to the earth, and do any rollercoasters go as fast as freefall speed? Suggested Related FunTrivia Quizzes - 90,000 currently online "Ask FunTrivia" is for entertainment purposes only, and answers offered are unverified and unchecked by FunTrivia. (Any more precision in the answer is not justified due to the inaccuracy of the original measurements used in this calculation.) At any other latitude, the rotational speed can be calculated as 1,000 multiplied by the cosine of the latitude
Saudi cleric claims Earth is stationary, does not revolve around Sun - The Express Tribune
PHOTO: ALARABIYA NEWS A Saudi cleric in a recent video rejected the theory that the Earth revolves around the Sun and claimed that the opposite is true, Al Arabia News reported. At that time that man used to stay on pavements and everybody considered him as mad.Recommend Bilal Choudry Feb 17, 2015 - 11:58AM Reply Physics should be taught in madrassas .
In the case of Venus, however, the gentle gravitational forces it may receive over billions of years to place it in a 3:2 resonance with the Earth don't seem to be strong enough to tip the entire planet over to make its rotation retrograde. It is known from the cratering evidence we see on a variety of planetary surfaces, that soon after the planets were formed, there were still some might large mini-planets orbiting the Sun
NOAA's SciJinks :: Why does Earth have seasons?
However, in the Northern Hemisphere, we are having winter when Earth is closest to the Sun and summer when it is farthest away! There is a completely different reason for Earth's seasons. Thus, sometimes it is the North Pole tilting toward the Sun (like in June) and sometimes it is the South Pole tilting toward the Sun (like in December)
Once a planet is in orbit, what keeps it there?: Gravity pulls the Earth in, and centrifugal force holds it out.* The centrifugal force on the Earth is just a result of the Earth moving in a curved path around the Sun. But once the ball gets rolling (so to speak) you find yourself with a solar system full of big rocks on slightly different orbits slamming into each other, and changing each others rotations
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