STS-70 Day 4 Highlights
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- On Sunday, July 16, 1995, 7 a.m. CDT, STS-70 MCC Status Report # 06
- As Discovery's crew began its fourth day in orbit, all of the space
shuttle' systems continued to perform exactly as designed, providing a
"no hassles" workplace for the astronauts' scientific investigations.
- The crew was awakened at 1:11 a.m. CDT to the sounds of Mission
Specialist Nancy Currie's 8-year-old daughter, Stephanie, and her
Ferguson Elementary School second- grade classmates singing "God Bless
- Pilot Kevin Kregel is still having difficulty aligning the internal
navigation equipment on the HERCULES video camera, a payload sponsored
by the Department of Defense Space Test Program that allows the video
to be automatically marked with the latitude and longitude of its
subject areas. Payload controllers continued to investigate methods
that may make it easier for the crew to take sightings on stars and
align the camera as the flight progresses.
- Mission Specialist Mary Ellen Weber also reported that the colon
cancer tissue samples growing in the Bioreactor Development System so
far look better than those cultured on the ground. The BDS is designed
to use ground-based and space-bioreactor systems to grow individual
cells into organized tissue that is morphologically and functionally
similar to the original tissue or organ. The BDS is composed of a
rotating cylinder that suspends cells and tissues in a growth medium,
simulating some aspects of microgravity. The system has been in use
for several years for ground-based research.
- Other work today will include operations with a microbial
contamination monitor that will be used to check the purity of
drinking water samples, additional measurements of the astronautsí
visual acuity with the Visual Function Tester, and continued study of
the glowing effect created by spacecraft surfaces as they encounter
atomic oxygen in low orbit.
- On Sunday, July 16, 1995, 2 p.m. CDT, STS-70 MCC Status Report # 07
- With its spacecraft continuing to perform flawlessly, Discovery's crew
sailed through a third day of work with the various experiments,
ranging from biological studies to Earth-observing cameras.
- Although the crew has experienced some difficulty with aligning the
HERCULES camera using star sightings, investigators with the
Department of Defense study said they are delighted with the views
they have seen from the device so far. The crew sent Mission Control
views of Florida and the Bahamas today taken by the camera, which
automatically prints the latitude and longitude of the subject matter
on the video. The crew members also sent video of star alignments they
have performed, and investigators say the video provides excellent
insights into possible improvements to the device.
- Other experiments included observations of a series of small
steering jet firings by Discovery using the Windex experiment, an
optical device that studies the glowing phenomena created as the
shuttle encounters atomic oxygen in orbit. The crew also reported at
least 60 contacts with amateur radio operators around the world using
the Shuttle Amateur Radio Experiment. During the mission, the
astronauts will speak with students at 10 schools worldwide using the
ham radio. In another study, the Visual Function Tester, crew members
reported their eyesight is affected slightly by weightlessness, taking
somewhat longer to adjust and focus on near objects. The experiment
studies this reaction to weightlessness, which has been noted since
the early flights of the Gemini Program.
- The crew also took time out to hold a press conference this morning,
answering questions from reporters in Florida and Ohio, the home state
of four out of the five astronauts aboard Discovery.
- The crew is wrapping up their day now and preparing to begin an
eight-hour sleep period at 4:12 p.m. They will awaken for Day 5 of
STS-70 at 12:12 a.m. CDT Monday.
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