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Keywords: Earth, plate tectonics
![Полярное сияние венчает Землю](https://images.astronet.ru/pubd/2003/10/03/0001193573/aurora_polar.preview.gif)
27.05.1996
What do aurora look like from space? The POLAR spacecraft answered this by photographing an auroral oval surrounding the north pole of the Earth, causing displays on both the night and day side. The auroral sub-storm, pictured in false-color above, developed within 15 minutes and may have lasted as long as on hour.
![Магнитное поле Земли](https://images.astronet.ru/pubd/2002/11/25/0001181037/field_glatz.preview.gif)
25.11.2002
Why does the Earth have a magnetic field? The electrical conductivity of the molten plasma of the Earth's core should be able to damp the current magnetic field in only thousands of years. Yet our five billion year old Earth clearly causes magnets to point to (defined) north.
![Столкновение с метеоритом 65 миллионов лет назад](https://images.astronet.ru/pubd/2003/08/17/0001192379/chicx_lpi_big.preview.gif)
12.10.1997
What killed the dinosaurs? Their sudden disappearance 65 million years ago, along with about 70 percent of all species then living on Earth, is known as the K-T event (Cretaceous-Tertiary Mass Extinction event). Geologists and paleontologists often entertain the idea of a large asteroid
![Если Земля была бы нейтронной звездой](https://images.astronet.ru/pubd/2003/10/07/0001193878/e_lens.preview.gif)
16.06.1995
If the Earth could somehow be transformed to the ultra-high density of a neutron star , it might appear as it does in the above computer generated figure. Due to the very strong gravitational field, the neutron star distorts light from the background sky greatly. If you look closely, two
![Вращающаяся Земля: вид с "Галилео"](https://images.astronet.ru/pubd/2007/05/14/0001221995/earth_galileo.preview.jpg)
14.05.2007
When passing Earth on your way to Jupiter, what should you look for? That question arose for the robotic Galileo spacecraft that soundlessly coasted past the Solar System's most photographed orb almost two decades ago.
![Северный магнитный полюс Земли](https://images.astronet.ru/pubd/2000/12/19/0001162366/northcanada_noaa_big.preview.jpg)
3.12.2000
A magnetic compass does not point toward the true North Pole of the Earth. Rather, it more closely points toward the North Magnetic Pole of the Earth. The North Magnetic Pole is currently located in northern Canada.
![Пролетая над Северным полюсом](https://images.astronet.ru/pubd/2000/12/21/0001163936/northpole_modis_big.preview.jpg)
20.10.2000
Orbiting over the north pole of planet Earth on May 5, the MODIS instrument on-board the Terra spacecraft, recorded this view of the ice cap 700 kilometers below. A radial grid centered on the pole is shown on top of the approximately true color image where each pixel covers about one square kilometer.
![США ночью](https://images.astronet.ru/pubd/2001/03/15/0001166662/usanight_dmsp_big.preview.gif)
8.07.2000
This is what the United States of America looks like at night! Can you find your favorite US city in this image? Surprisingly, city lights make this task quite possible. The above picture is actually a composite of over 200 images made by satellites orbiting planet Earth.
![Радарные наблюдения планеты Земля](https://images.astronet.ru/pubd/2003/09/22/0001193095/rainier.preview.gif)
24.08.1995
This image of Mt. Rainier, Washington USA, planet Earth, was produced by the Spaceborne Radar Laboratory which flew on the Space Shuttle Endeavour in 1994. Radar, short for RAdio Detection And Ranging...
![Отражение Земли в шлеме астронавта](https://images.astronet.ru/pubd/2008/01/23/0001225724/reflections_sts118.preview.jpg)
23.01.2008
Astronaut self-portraits can be particularly interesting. Visible in the above picture, working in from the outer borders, are the edges of the reflecting helmet of a space suit, modules of the International Space Station (ISS), the Earth, the arms of Expedition 15 astronaut Clay Anderson, and the digital camera used to snap the image.
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