Join Donate

The Planetary Report • September/October 2000

Cometary Suicides

On the Cover: An orbiting telescope designed to study the Sun has also proved effective at finding comets. Professional and amateur comet-hunters alike are detecting comet after comet in data returned by the Solar and Heliospheric Observatory (SOHO). This image of a comet plunging into the Sun's corona was taken on December 23, 1996 by the Large Angle Spectrometric Coronograph (LASCO) on SOHO. Better known as the "Christmas Comet," SOHO-6 was, as its name suggests, the sixth comet found by the spacecraft. The solid orange area at bottom is a mask to block out the brilliant disk of the Sun.
NASA/European Space Agency (ESA)

Features

4 Flowers for Mars: Chris McKay has spent his entire career considering the possibility and potential of life on other worlds, and in this column he floats the idea of a flower on Mars.

6 Hunting Snowballs in Hell: Robert Burnham reports on the dozens of comets unexpectedly discovered by the Solar and Heliospheric Observatory (SOHO).

12 Unearting Seeps and Springs on Mars! Bruce Jakosky describes a controversial finding of recently formed features on Mars that appear to have been carved by liquid water.

20 An Antarctic Idyll: For technical editor Jim Burke, long-time dedicated service to the Society led him to an impromptu trip to Antarctica.

Departments

3 Members' Dialogue Contamination concerns.

17 World Watch NASA mission updates.

18 Q&A Could the K-T impact have flung debris from Earth into the solar system?

20 Society News World Space Week; PlanetTrek evolves.

LightSail
Let's Change the World

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Today

meteor over landscape
The Threat is Real

Working together to fund our Shoemaker NEO Grants for astronomers, you can literally help save the world.

Donate

You are here: