By Encyclopaedia Britannica
Read Online or Download New Views of the Solar System PDF
Similar science studies books
All you wish is a couple of scissors and you'll make appealing snowflake paper cut-outs.
Explains what gentle and imaginative and prescient are; describes the clinical strategy; and contains experiments checking out assorted mild and imaginative and prescient techniques.
- Chemistry Science Fair Projects: Using Acids, Bases, Metals, Salts, and Inorganic Stuff (Chemistry! Best Science Projects)
- Blasts of Gas: The Secrets of Breathing, Burping, and Passing Gas (The Gross and Goofy Body)
- Child Protection: An Introduction
- How Astronauts Use Math
- A Mangrove Forest Food Chain: A Who-Eats-What Adventure in Asia (Follow That Food Chain)
Additional info for New Views of the Solar System
These flybys were designed as “gravity assists,” which transfer momentum from the planet to the spacecraft in order to increase the craft’s velocity and adjust its course. Such gravity assists also allow spacecraft to investigate Venus while flying by. The first craft to use a gravity assist was Mariner 10, which flew past Venus in 1974 on its way to Mercury. Others have included NASA’s Galileo, which flew by Venus in 1990 on its way to Jupiter, and NASA’s Cassini, which flew by Venus in 1998 and 1999 on its way to Saturn.
Because the moon is so close to Earth, the pull of its gravity causes the tides. The tides are most obvious as the regular, periodic rise and fall of the surface of Earth’s seas. The tides also regularly cause very slight deformations in the solid parts of the planet. Earth’s much stronger gravity affects the moon as well. Its pull causes slight bulges on the moon’s surface in the direction of Earth. In addition, gravitational effects of the Earth-moon system are very slowly causing Earth to spin slower and the moon to recede from Earth.
25, 1975, surviving 65 minutes there. Twin of Venera 9. Began orbiting Venus on Dec. 4, 1978. Mapped more than 90 percent of surface with radar. Returned data from several instruments for more than 14 years. Ran out of fuel in 1992 and burned up in atmosphere. Multiprobe released four atmospheric probes (one large, three small) at different regions of planet. Entered atmosphere on Dec. 9, 1978, returning data from all levels of atmosphere to surface. Landed on planet on March 1, 1982, surviving on surface for 127 minutes.