total loss of crew and vehicle. That launch failure resulted in the cancellation of dozens of subsequent shuttle missions, including the next scheduled launch, STS-61-E, planned for March 6, 1986, with a payload including the ASTRO-1 observatory, which was intended to make astronomical observations of Halley's Comet. Presumed observations from space Any observations of Halley's Comet made by the crew of Soyuz T-15, which made the first trip to the Mir space station and the last to Salyut 7 in March 1986, are unknown. References External links Image of Halley in 1986 by Giotto spacecraft (ESA Giotto. Archive.org, 27 Sep 2011) Soviet space probes European Space Agency space probes NASA space probes Japanese space probes