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Title: Magellan Mission to Venus
Url: http://www2.jpl.nasa.gov/magellan/
Publisher: California Institute of Technology
United States. National Aeronautics and Space Administration
Description: NASA's Magellan spacecraft used a sophisticated imaging radar to make the most highly detailed maps of Venus ever captured during its four years in orbit around Earth's sister planet from 1990 to 1994. After concluding its radar mapping, Magellan also made global maps of Venus's gravity field. Flight controllers also tested a new maneuvering technique called aerobraking, which uses a planet's atmosphere to slow or steer a spacecraft. Craters shown in the radar images that Magellan sent to Earth tell scientists that Venus's surface appears relatively young -- resurfaced about 500 million years ago by widespread volcanic eruptions. The planet's present harsh environment has persisted at least since then, with no features detected suggesting the presence of oceans or lakes at any time in the planet's past. Scientists also found no evidence of plate tectonics, the movements of huge crustal masses on Earth that cause earthquakes and result in the drifting of continents over time spans of hundreds of millions of years. In October 1994 Magellan's mission is expected to end with a dramatic plunge to the planet's surface, the first time an operating planetary spacecraft has ever been intentionally crashed. The purpose of the maneuver is for Magellan to gather data on Venus's atmosphere before it ceases to function during its fiery descent.
LC Classification: Science -- Astronomy -- Descriptive astronomy -- Solar system
Science -- Astronomy -- Descriptive astronomy -- Solar system -- Solar parallax and related constants -- Transit of Venus
Science -- Astronomy -- Descriptive astronomy -- Universe. Space. Space sciences
Science -- Astronomy -- Theoretical astronomy and celestial mechanics -- Perturbations -- Planetary theory -- Individual planets -- Venus
GEM Subject: Science -- Physics
Science -- Astronomy
Science -- Space sciences
Key Concept: Astronomy -- Planets
Resource Type: Collection (DCMI Type Vocabulary)
Science Materials
Format: html
Audience: College/University Instructors
Higher Education
Secondary Education
Technical School First Cycle
Technical School Second Cycle
University First Cycle
University Second Cycle
Vocational Training
Language: English
Access Rights: Free access
Source: comPADRE
Full Record Views: 14
Resource URL Clicks: 1
Cumulative Rating: NOT YET RATED
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