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Glossarbegriffe: Raumstation

Description: Eine Raumstation ist ein Raumfahrzeug, das sich über einen längeren Zeitraum in einer Umlaufbahn befindet und es Menschen ermöglicht, sich lange Zeit im Weltraum aufzuhalten. Insbesondere bietet eine Raumstation geeignete Lebensbedingungen, von atembarer Luft bis hin zu einer geregelten Temperatur. Bislang waren alle Raumstationen auf regelmäßige Lieferungen von Lebensmitteln und Wasser von der Erde angewiesen. Bisherige Raumstationen befanden oder befinden sich in niedrigen Erdumlaufbahnen, wobei die Internationale Raumstation in einer Höhe von etwa 420 Kilometern über dem Meeresspiegel die Erde umkreist. Eine Raumstation in der Umlaufbahn befindet sich im freien Fall, wobei die Astronauten, die Ausrüstung und die Raumstation alle der gleichen Beschleunigung durch die Erdanziehung ausgesetzt sind. Da die Astronauten und die Ausrüstung in der Raumstation mit der gleichen Stärke und Richtung beschleunigt werden wie ihre Umgebung in der Raumstation, erleben sie ein Gefühl der Schwerelosigkeit, obwohl sie nicht wirklich schwerelos sind. Dieses Gefühl wird oft als Mikrogravitation bezeichnet. Diese Bezeichnung kann verwirrend sein, da die Anziehungskraft der Erde auf die Raumstation, die Astronauten und die Ausrüstung immer noch erheblich ist. Raumstationen werden in erster Linie zu Forschungszwecken genutzt, insbesondere zur Erforschung der Auswirkungen der Mikrogravitation auf den Menschen; dies ist eine wichtige Vorbereitung für weitere Phasen der Weltraumforschung.

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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".

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International Space Station

International Space Station

Bildunterschriften: The International Space Station (ISS) is in orbit around the Earth. Different crews with personnel from many countries have been working there constantly since 2000. The ISS is a laboratory that provides a microgravity environment for experiments in engineering, science, and medicine. The entire structure is more than 100 metres long and flies at an altitude of approximately 400 kilometres above ground.
Bildnachweis: NASA credit link

License: PD Public Domain icons


A cartoon showing an astronaut some foodstuffs used in space and information on how they are prepared in Arabic

What and How Do Astronauts Eat in Space?

Bildunterschriften: Part of the Simplifying Astronomy for Arabic Speakers project, this infographic explains how astronauts eat in space and the special requirements for their meals. How Do Astronauts Eat in Space? In microgravity, traditional meals don’t work. Food must be specially prepared to stay edible, easy to consume, and free from floating crumbs that could damage equipment. Instead of plates and cutlery, astronauts eat from sealed packages using special utensils. Key Characteristics of Space Food ✔ Tasty & Varied – To keep astronauts satisfied. ✔ Compact & Lightweight – Saves storage space and reduces payload weight. ✔ Mess-Free – No crumbs that could float and cause issues. ✔ Long Shelf Life – Must last for extended missions. Types of Food in Space 1. Fresh Food – Fruits & vegetables (eaten quickly). 2. Natural Food – Nuts, dried fruits. 3. Freeze-Dried – Rehydrated before eating. 4. Oil-Coated – Helps preserve freshness. 5. Dehydrated – Water is removed, then re-added. 6. Thermostabilized – Packaged for long-term use. How Astronauts Prepare Food 1. Rehydration – Adding hot water to dried meals. 2. Heating – Using small ISS ovens. 3. Careful Opening – Prevents food from floating away. Space Food Menu on the ISS Steak – High-protein for muscle maintenance. Scrambled Eggs – Nutritious and easy to prepare. Juices – Sealed to prevent floating. Chocolate Pudding – A favorite treat. Tortillas – Preferred over bread to avoid crumbs. Who Prepares Space Food? Food scientists design and test meals on Earth to meet safety and nutrition standards before they are sent on missions. Final Thoughts Eating in space is a challenge, but innovative food technology keeps astronauts healthy and energized. Every meal is carefully planned to support long-duration space exploration!
Bildnachweis: Ali Al-Edhari

License: CC-BY-4.0 Creative Commons Namensnennung 4.0 International (CC BY 4.0) icons

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