Review:
This book covers the exploration of Mars, the exploration of our solar system and beyond by the Voyagers, the voyage to Saturn and its moons by Cassini, voyage to Wild comet Stardust, the observation of Sun by SOHO satellite, mapping the Milky Way by the Hipparcos and Gaia missions, scanning the skies with Spitzer infra-red telescope, the microwave exploration of the cosmic background radiation by the COBE, WMAP and Planc’s probes, and finally exploration of cosmos in X-Rays by Chandra.
Inspect the whole Science Section
The SOHO observatory is placed at the Lagrangian ppoint L1, roughly a million miles from Earth. At that point the sum of the Sun and the Earth’s gravity combine to keep the satellite locked onto the Sun-Earth line.
European Space Agency offers a sky map on its website: https://www.cosmos.esa.int/?project=HIPPARCOS@page=star_globe
The Milky Way is 100,000 light years across. Its galactic centre is 28,000 light years away from the Earth.
Inspect the whole Science Section
Notes:
The surface of Mars is strongly oxidizing, as the rusty red colour of iron oxide indicates. A day on Mars lasts 24 hours and 37 minutes. A year on Mars takes 687 days.The SOHO observatory is placed at the Lagrangian ppoint L1, roughly a million miles from Earth. At that point the sum of the Sun and the Earth’s gravity combine to keep the satellite locked onto the Sun-Earth line.
European Space Agency offers a sky map on its website: https://www.cosmos.esa.int/?project=HIPPARCOS@page=star_globe
The Milky Way is 100,000 light years across. Its galactic centre is 28,000 light years away from the Earth.
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