Ringworlds
Article Abstract:
Astronomers have sought to discover newly formed planets by looking near stars with the Hubble Space Telescope. Rings of dust have been found, and the formation of rings from dust suggest the operation of a plant's gravity. There are two such cases, and the orbit of the planets cannot be calculated exactly, but they appear to be a long way away from the parent star. This has led to questions about the way that planets are formed, and whether the new planets are spiralling outwards. Further research is needed to refine theories of planetary formation.
Publication Name: The Economist (UK)
Subject: Business, international
ISSN: 0013-0613
Year: 1999
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Shadowlands
Article Abstract:
Solar eclipses allow the sun's corona to be studied. They do not occur often, and this is one reason why they have such a major impact on humans, who were once terrified of them. Eclipses have been used for military purposes by those who have been able to forecast them. Eclipses can be viewed for a longer period by people who travel on fast aircraft, and they have become tourist attractions. Eclipses may end as a result of the sun growing larger and the moon moving from the earth, but this is not forecast to happen for 250 million years.
Publication Name: The Economist (UK)
Subject: Business, international
ISSN: 0013-0613
Year: 1999
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