Questions tagged [experiment]

Questions regarding scientific procedures performed in space to test a hypothesis or make a discovery.

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4
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0answers
54 views

What are these two SPHERES doing?

In her tweet ISS expedition 59/60/61 astronaut Christina Koch shows two SPHERES doing something. What are they doing exactly? Why do they appear to be connected? Had a blast cheering on the ...
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Experiments during ascent

Has any astronaut or cosmonaut personally performed experiments, that could only be done by a human in flight, during the ascent phase of a flight. If so, what kind of experiment(s) did they perform?
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2answers
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Can mushroom spores survive the vacuum and radiation of space?

From this source, it states that: Living spores have been found and collected in every level of earth’s atmosphere. Mushroom spores are electron-dense and can survive in the vacuum of space. ...
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0answers
89 views

What would be payload capacity of reusable Falcon 9 if there was no atmosphere on Earth?

Reading this question and answers, I wondered what would happen if there was no atmosphere, everything else being the same on Earth. What would be the payload capacity to LEO of Falcon 9 in reusable ...
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How to measure the effect of the propellants to the thrust of the ion engines in a diy experiment? [duplicate]

I have a science project about how different propellants affect the thrust of an Ion engine. So I have 2 questions: How can I measure the thrust of a diy ion engine? (technique or tool that I need to ...
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2answers
146 views

How to get experiments to space?

How would a person get an experiment done in space? What is the chain of command on something like that? I would like to drop some inflated balloons from space to reenter the atmosphere to see which ...
2
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0answers
49 views

Why are the heat sensor probes in HP3 probe spaced with reducing gap with depth?

The HP3 probe used for studying the geothermal features of Martian surface, hammers upto 5m deep and inserts a tether lined with heat sensor probes. This link shared earlier by @uhoh, is an ...
10
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1answer
365 views

Have there been experiments in space to determine how plants grow without any gravitational or light cues for direction?

I just read a question on the gardening stack site about why plants grow up, to which one of the answers has mentioned experiments on the ISS, and which stated: experiments on the ISS have shown ...
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2answers
12k views

Is pinging the Moon with a laser as shown on “The Big Bang Theory” possible?

In an episode of season 3 of The Big Bang Theory, the cast sends a laser pulse to the Moon. This seems to be a real thing: What Neil & Buzz left on the Moon (2004). My questions are: Could ...
12
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1answer
314 views

Fish in space: what were the results?

I've been interested in the Japanese experiment on the ISS involving raising fish in space, but in all my reading the results seem a bit ambiguous/conflicting (depending on source). What are the ...
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2answers
157 views

How do we determine the internal composition of gas giants?

What kind of scientific experiment can a satellite conduct to determine the internal stucture of a gas giant? I know that geophones and seismic waves can be used for a planetary lander on a rocky ...
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1answer
221 views

Can orbital maneuvers be performed by a solar sail to correct eccentricity?

This unique model would spend very little time in Earth's shadow and eccentricity correction is performed on every pass. Can the angle of the hard flat solar sail or one big solar vane maintain an ...
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Can a satellite work like a radiometer?

Like a Crookes Radiometer, could a satellite have a stiff vain to maneuver? With a white side to let light pass and the black side capture light radiation be enough provide radiation pressure to keep ...
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1answer
131 views

2 Hubble telescopes looking at each other for a world CCTV? [closed]

As technology progresses could something like a Super Hubble see satellite the Earth to have a time delay to have any use? Super Hubble A (or a huge mirror) is 30 light minutes away looking at Earth ...
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2answers
138 views

What affects the flight of rockets? [closed]

I need some help on my science experiment. I have tried researching it on the internet but nothing seemed to have answered my question. I am currently doing a science fair project on "How does Rocket ...
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0answers
47 views

Where can i book a flight for scientific experiment to 100 km high? [closed]

I have just been wondering if is there any company in Europe which launch scientific experiments into an altitude of about 100 km?
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1answer
100 views

Current biggest challenge [closed]

What is regarded as the current single biggest challenge/hurdle limiting space exploration? Once that tipping point has past it would pave the way for future exploration to dramatically increase.
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2answers
988 views

How did this structure fit into the Shuttle and then expand to 28 meters?

In this answer I read about the Inflatable Antenna Experiment that flew with STS-77. According to this article: Packed into the Spartan, the IAE weighed only 132 pounds; on deployment (inflation), ...
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0answers
52 views

Psychotropes study in microgravity

Alcohol seems to have been taken and consumed in space (not so sure about the ISS, but definitely on Mir). Is this the only psychotrope substance that has been tried in space ? Is there any formal ...
3
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1answer
703 views

Blimp on Earth, but a glider on Mars?

Could enough surface area be created with a blimp to shed speed using Mars' atmosphere to have a controlled soft landing to minimize the need for retrorockets? Runway would need to be in place. While ...
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5answers
2k views

Has any living thing been directly exposed to the vacuum of space

In our several decades of spaceflight have we ever exposed any living organism to space? I'm pretty sure this hasn't happened to Humans, but have we jettisoned some lab rats into space ("for science") ...
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1answer
232 views

Local expansion measured, near zero via Lunar Ranging - what about deep space probes?

All of the discussion around this question and in the comments below this answer, about the local effects of "the expansion of space" (Metric expansion of space) or Cosmological redshift or just ...
3
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1answer
306 views

Why did the Zond 5 tortoises lose body mass so quickly?

For reference: https://en.wikipedia.org/wiki/Zond_5 It is now clear that when we are in space for a long time, our body loses some mass. The question I want to ask is, how much time is needed for a ...
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1answer
460 views

Scientifically useful measurements from low-budget high-altitude balloon flights

Let's say, hypothetically, that I'm thinking about launching a high altitude balloon. I want to contribute to the bank of mankinds' knowledge, not just take pretty pictures. My (notional) budget is ...
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2answers
325 views

Couldn't precursor missions increase the risk of losing a crew?

Let's say that the big goal for HSF is decided to be to land humans on the surface of Mars. Is it certain that the total mission/campaign risk decreases if one does crewed precursor missions? For ...
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1answer
634 views

What factors are influencing a woosh rocket?

I asked this over at Physics, but no one seemed to know, so I'll try here: If I fill a plastic bottle with a small amount of rubbing alcohol, shake it around and hold a match to the bottle neck, I'll ...
10
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1answer
282 views

Does atmospheric drag or reboosting maneouvers affect the integrity of microgravity experiments aboard ISS?

ISS is in low Earth orbit, and as such, its orbital progress is gradually slowed by atmospheric drag and consequently requires occasional reboosts. It also has to be occasionally maneouvered to avoid ...
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2answers
558 views

Methane detection on Mars by MOM?

It's been almost a month since the ISRO's Mars Orbiter Mission (MOM) was put into orbit. Though it doesn't carry much scientific payload, the one most talked about is the methane sensor, which even ...
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1answer
1k views

Why did we take dinosaur bones into space?

For the past few days, since I found out about this, I've been trying to figure out what was the reasoning behind taking dinosaur bones into space. Everywhere I looked I couldn't find any explanation ...
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3answers
8k views

How do you 'make oxygen' on Mars?

This morning's BBC News says that a 2020 rover mission to Mars will "make oxygen". There is a brief line indication that it will extract it from atmospheric CO₂, but no other details. What process ...
3
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1answer
867 views

What would it look like to shatter a glass or break similar material in Zero Gravity?

I just had this thought today: I wonder what the shattering would look like if you "dropped" a glass or a ceramic cup in zero gravity. Obviously you can't drop it, you'd have to like throw it. But ...
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1answer
429 views

What was the design and/or results of the fish experiement onboard Space Shuttle Columbia disaster mission STS-107?

Highlights from NASA's webpage lists studies done during the Space Shuttle Columbia mission STS-107 including student experiments, one of them including fish. What did the student fish experiment ...
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5answers
7k views

Why hasn't NASA planted a stationary lab on Mars yet?

Why does NASA send rovers such as Curiosity instead of remotely building a small building on the surface of Mars?
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2answers
424 views

What work is being done to develop and test artificial gravity?

There are many ways to produce artificial gravitational effects, such as a rotating spacecraft, linear acceleration, or harnessing magnetism. Possibly there are other ways to produce gravity that have ...
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1answer
105 views

Additional tasks for ATV, HTV, Dragon and Cygnus

The Progress cargo vessels are often given additional tasks of technical or scientific value. Typically performed after they undock from the station. Many of them participated in the series of ...
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1answer
844 views

With one out of two Thermal Control Systems on ISS malfunctioning, how long can Loop B keep up with increased load?

International Space Station (ISS) is in trouble again. One of the two Thermal Control System (TCS) loops (Loop A) is malfunctioning due to a troublesome Flow Control Valve (FCV). This is nothing new ...
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1answer
170 views

What are the criteria to select plants for study in space?

Me? I like roast aubergines cooked the way Mum makes it with mashed potatoes deep-fried, omelette, and roti. If I travel in space that would be the staple in my tiffin. In my on-board farm would loom ...
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2answers
685 views

Is it possible to perform the Galileo's Leaning Tower of Pisa experiment on the Moon?

Since the Moon has no atmosphere, is it possible to perform the Galileo's Leaning Tower of Pisa experiment on its surface? Has any astronaut performed anything similar?