CBS News/Spaceflight Now HST Spacewalk Statistics 5/19/09

HST Spacewalk History SpaceCalc

Flt STS No. Astronaut HH MM Hubble Space Telescope EVAs in Detail

N/A STS-31 B McCandless 00 00 04/24/90: HST Launch 0 EVAs K Sullivan McCandless and Sullivan were suited up for an EVA when one of Hubble's solar arrays failed to unfurl as expected. Controllers later coaxed it open without needing a spacewalk.

29* STS-61 S Musgrave 07 53 12/02/93: HST Servicing Mission 1 5 EVAs J Hoffman 06 47 07 21 First mision with five spacewalks; astronauts installed the WFPC-2, COSTAR, four gyroscopes, gyro electronics and (*29th US T Akers 06 35 two new solar arrays. All mission objectives were accomplished, correcting HST's flawed optics. flight with an K Thornton 06 50 EVA; STS EVAs = 27) STS-61 TOTAL 35 26

35 STS-82 M Lee 06 42 02/11/97: HST Servicing Mission 2 5 EVAs S Smith 07 11 05 17 Four EVAs originally planned; fifth EVA added to repair peeling and flaking insulation. Objectives included G Harbaugh 07 27 installation of STIS, NICMOS, a fine guidance sensor, a solid-state recorder and a reaction wheel assembly (RWA- J Tanner 06 34 1). All objectives accomplished.

STS-82 TOTAL 33 11

40 STS-103 S Smith* 08 15 12/19/99: HST Servicing Mission 3A 3 EVAs J Grunsfeld 08 08 Servicing Mission 3 was broken into two missions, SM-3A M Foale 08 10 and SM-3B, because of multiple gyroscope failures. C Nicollier Objectives of SM-3A included installation of a new computer, another solid-state recorder, a fine guidance sensor and six gyroscopes. All objectives accomplished. STS-103 TOTAL 24 33

51 STS-109 J Grunsfeld* 07 01 03/01/02: HST Servicing Mission 3B 5 EVAs R Linnehan 06 48 07 20 Objectives included installation of two new solar arrays, diode boxes, a reaction wheel assembly, power control J Newman 07 16 unit, the Advanced Camera for Surveys and an experimental cooler to revive the NICMOS instrument. All M Massimino 07 30 objectives accomplished.

STS-109 TOTAL 35 55

124 STS-125 J Grunsfeld* 07 20 5/11/09: HST Servicing Mission 4

Page 1 CBS News/Spaceflight Now HST Spacewalk Statistics 5/19/09

4 EVAs A Feustel 06 36 07 02 Wide Field Camera 3, the Cosmic Origins Spectrograph, six gyros, six batteries, a refurbished fine guidance M Massimino* 07 56 sensor, new insulation and a replacement SI C&DH. The crew also plans to fix the Advanced Camera for Surveys M Good 08 02 and the Space Telescope Imaging Spectrograph.

STS-125 TOTAL 36 56

SINGLE FLIGHT EVA RECORD: 36:56

22 EVAs TOTAL TIME 166 01 By 16 astronauts (*Astronauts with multiple flights)

Compiled by William Harwood

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