Showing results for "earth%20and%20atmosphere"
Showing 36 results
A Catalyst article about giant asteroids. Astronomers say that, one day, a giant rock from space will collide with the Earth and cause mass devastation. This could lead to the extinction of many species, including humans. The article looks at what can be done to prepare for such an impact and what happened when a...
This Catalyst article describes how a crewed trip to Mars and back would be very demanding, both technologically and for the people involved.
This article is from Catalyst: Secondary Science Review 2011, Volume 22, Issue 2.
Catalyst is a...
A Catalyst article investigating if there is life elsewhere in the universe. Scientists have found many different ways of looking for life. This article looks at the exploration so far.
This article is from Catalyst: GCSE Science Review 2004, Volume 14, Issue 3.
This Catalyst article is devoted to the use of satellites for navigation. It looks at GPS (global positioning system), the involvement of satellites and how GPS signals work in navigation and calculating position.
This article is from Catalyst: GCSE Science Review 2002, Volume 13, Issue 2.
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This Catalyst article looks at volcanic activity that generates earth tremors. It talks about seismologists that measure these tremors in an attempt to predict future eruptions.
This article is from Catalyst: Secondary Science Review 2016, Volume 27, Issue 2.
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A Catalyst article about designing, building and testing a spacecraft. There are thousands of man-made satellites orbiting the Earth. Some are only a few hundred kilometres above the Earth and complete one orbit roughly every 90 minutes. Geostationary satellites are located around 40 000 kilometres from the surface...
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Exploiting the lack of gravity in experiments carried out in space can yield information that might take much longer to find on earth on earth, but how is it achieved? |
A Catalyst article describing the species that have had the greatest impact on planet Earth during its billions of years of history. Which come out on top of the 'league table of life'? As hominids have only walked the Earth for part of its existence the article looks at the history of life, from the dawn of...
This edition of space:UK, from the UK Space Agency, looks at the Rosetta mission to land on Comet 67P, how Inmarsat satellites provide broadband internet across remote areas of the globe, and a profile of European missions designed to investigate our changing planet. Articles include: *Recent news: including Europe...
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These articles explore how life on earth began, consider the importance of carbon in our biology and whether there might be an alternative. |
This Catalyst article looks at life in extreme environments on Earth which can suggest how life might exist on Mars. One of the developments in recent years that really opened up scientists’ eyes to the possibility of life on Mars has been the realization of just how adaptable and versatile life on Earth is.
...A Catalyst article about the use of remote telescopes and detecting cosmic rays. Giant telescopes that can be operated remotely are located in Hawaii and Australia and are known as the Faulkes telescopes.
These are available to students in the UK to do original research with, and enable the following...
In this Catalyst article, Mike Follows describes the surprising range of thermometers available to scientists today.
Many physical properties of materials depend on temperature. Thermometers are vital for measuring body temperature. The body's biochemical reactions work best at 37°C and the body is in...
Geothermal energy is the heat produced by decay of radioactive isotopes deep within the Earth. The temperature at the centre of the Earth is thought to be around 5,000°C, with the temperature reducing toward the surface. It is estimated that 99.9% of the planet is above 100°C. Geothermal energy is considered a...