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Comets |
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1577 |
|
Earth based |
Tycho Brahe |
Determine that comets are celestial not atmospheric |
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1862 |
|
Earth based |
Giovarnni Virginio Schlaperelli |
Deduced that comets and meteor showers follow the same orbits |
|
1949 |
|
Earth based |
Fred Whipple |
Determines that comet nuclei are dirty snowballs. |
|
1977 |
|
Earth based |
Charles Kowal |
Chiron first described as, asteroid 2060, later a coma is found suggesting it is a comet. |
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1996 |
|
Earth based |
Mauna Kea Telescope |
Examined Hyatutake and determined the tail's acetylene to water ratio was that of interstellar unprocessed ice. |
|
1999 |
Postponed |
Sample
return |
Comet
Wild 2 |
Scoop dust December 2003 from coma and return it
in 2006 |
|
1984 |
August 16 |
Miscellaneous |
AMPTE |
artificial comet tail produced to measure the effects of the solar winds. |
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Planet X |
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1995 |
April |
Earthbased |
|
Time residuals in PSR 1937 + 21 a Pulsar in Vulpecula has a one millisecond time anomaly probably due to some large mass beyond Pluto. |