The hidden members of planetary systems.

• Autores: David R. Ardila
• Localización: Scientific American, ISSN 0036-8733, Vol. 290, Nº. 4, 2004, págs. 62-69
• Idioma: inglés
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• Resumen

  • Over the past nine years, astronomers have discovered at least 111 planets around sunlike stars by looking for the slight back-and-forth motion that these bodies impart to their parent suns. Yet this technique detects only the most massive and tightly orbiting objects. Once released, the debris dust spreads through much of the inner solar system, out to the orbit of Jupiter. One of the great advances of astronomy over the past decade has been the discovery of planets outside our solar system-the first tangible clue that we may not be alone in the universe. INSETS: WHAT THE DUST REVEALS;SCULPTED BY PLANETS;BETA PICTORIS.