STS-50

Key takeaways

STS-50 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect STS-50 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of STS-50 from memory before moving on to harder problems.

Reference excerpt

STS-50 (U.S. Microgravity Laboratory-1) was a NASA Space Shuttle mission, the 12th mission of the Columbia orbiter. Columbia landed at Kennedy Space Center for the first time ever due to bad weather at Edwards Air Force Base caused by the remnants of Hurricane Darby.

Crew

The astronauts were divided into a red team and a blue team to allow around-the-clock monitoring of experiments.

Crew seat assignments

Mission highlights The U.S. Microgravity Laboratory-1 was a spacelab mission that included experiments in material science, fluid physics and biotechnology. It was the first flight of a Space Shuttle with the Extended Duration Orbiter (EDO) hardware, which allowed longer flight durations. The primary payload was the U.S. Microgravity Laboratory-1 (USML-1), which made its first flight. It featured a pressurized Spacelab module. USML-1 was the first in a planned series of flights to advance U.S. microgravity research efforts in several disciplines. Experiments conducted were: Crystal Growth Furnace (CGF); Drop Physics Module (DPM); Surface Tension Driven Convection Experiments (STDCE); Zeolite Crystal Growth (ZCG); Protein Crystal Growth (PCG); Glovebox Facility (GBX); Space Acceleration Measurement System (SAMS); Generic Bioprocessing Apparatus (GBA); Astroculture-1 (ASC); Extended Duration Orbiter Medical Project (EDOMP); Solid Surface Combustion Experiment (SSCE). Secondary experiments were: Investigations into Polymer Membrane Processing (IPMP); Shuttle Amateur Radio Experiment (SAREX-II); and Ultraviolet Plume Instrument (UVPI).

Major mission accomplishments Completed first dedicated United States Microgravity Laboratory-1 flight laying the groundwork for Space Station Freedom science operations. Completed 31 microgravity experiments in five basic areas: fluid dynamics, crystal growth, combustion science, biological science, and technology demonstration. Introduced several new microgravity experiment facilities for multiple users and multiple flights (including the Crystal Growth Furnace, Drop Physics Module, and the Surface Tension Driven Convection Experiment). Demonstrated the efficiency of interactive science operations between crewmembers and scientists on the ground for optimizing science return. Completed longest period of protein crystal growth in Space Shuttle program. Conducted iterative crystal growing experiments where chemical compositions were altered based upon microscopic observations of growth processes. Completed longest Space Shuttle mission (13 days 19 hours 30 minutes) at that time and the first Extended Duration Orbiter (EDO) flight of the Space Shuttle program. Demonstrated versatility of the new Glovebox Facility (GBX) for crewmember interaction with multiple experiments for maximum science. The Space Shuttle Columbia rocketed into orbit for the longest Shuttle flight in history. Columbia touched down almost 14 days later, returning with data and specimens amassed from an important suite of microgravity experiments. Shuttle mission STS-50 carried the first United States Microgravity Laboratory-1 (USML-1) to space, conducting long-duration microgravity experiments. Microgravity is a gravitational acceleration that is small when compared to the gravitational attraction at Earth's surface. Through the action of free fall (e.g., Space Shuttle orbiting Earth), the local effects of gravity are greatly reduced, thus creating a microgravity environment. During the extended mission of Columbia, scientist crew members working inside the Spacelab long module carried in the payload bay of Columbia, conducted more than 30 microgravity investigations and tests. To maximize the scientific return from the mission, experiments took place around the clock. The investigations fell under five basic areas of microgravity science research: fluid dynamics (the study of how liquids and gases respond to the application or absence of differing forces), materials science (the study of materials solidification and crystal growth), combustion science (the study of the processes and phenomena of burning), biotechnology (the study of phenomena related to products derived from living organisms), and technology demonstrations that sought to prove experimental concepts for use in future Shuttle missions and on Space Station Freedom. Three new major experiment facilities were flown on USML-1: the Crystal Growth Furnace, Surface Tension Driven Convection Experiment apparatus, and Drop Physics Module. An additional piece of new hardware on this flight was the versatile glovebox, which permitted "hands-on" manipulation of small experiments while isolating the crew from the liquids, gases, or solids involved. Some of the USML-1 experiments are described below.

Spacelab experiments

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with STS-50

Start with the simplest possible case. Write down what STS-50 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to STS-50 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about STS-50 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of STS-50

In research: STS-50 appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses STS-50 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: STS-50 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Space Shuttle missions, Spacecraft launched in 1992, so understanding it makes those chapters shorter.
In everyday life: Look for STS-50 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

How to study STS-50 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what STS-50 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain STS-50 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is STS-50 in simple terms?

STS-50 (U.S. Microgravity Laboratory-1) was a NASA Space Shuttle mission, the 12th mission of the Columbia orbiter.

Why does STS-50 matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study STS-50?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on STS-50.