Loading...

Documents & Resources - Search Results

 

Your search produced 35 results
Click here to scroll to results

Hide filtering options

Filter results

 

 

 

 

 

 

Search results

Mare Crisium reveals its dark, flat plain surrounded by cliffs and highlands, dotted with numerous smaller impact craters.

Mare Crisium - Sea of Crises

image

Caption: The image shows the lunar Mare Crisium, the “Sea of Crises,” as seen by NASA’s Lunar Reconnaissance Orbiter in 2015. The photo size is 750 × 750 km, about the size of Germany. Mare Crisium is located in the Moon’s Crisium basin, near the great Mare Tranquillitatis on the near side of the Moon. It is visible from Earth and is characterized by a relatively smooth and flat surface surrounded by cliffs and highlands. The basin that now contains the Mare Crisium was formed by a massive impact event likely during the Nectarian period approximately 3.9 billion years ago. During this time in lunar history, major basins including the Crisium basis were formed by large impact events. Later in lunar history, the basin was flooded by lava to form the dark and flat plain we see today. Its floor is about 1.8 kilometers below the typical lunar surface level. The study of lunar maria provides insights into the volcanic history and impact processes that have affected the Moon and other celestial objects.
Credit: NASA, Lunar Reconnaissance Orbiter
Credit Link

Glossary Terms: Moon , Mare
Categories: Solar System

License: Public Domain Public Domain icons

File ( image 6.78 MB)


Solar eclipse phases

Solar eclipse phases

image

Caption: Composed image of the solar eclipse of April 8th, 2024. These images were taken in Arkansas, USA.
Credit: Carolin Liefke

Tags: Solar eclipse , Sun

License: Creative Commons Attribution 4.0 International (CC BY 4.0) Creative Commons Attribution 4.0 International (CC BY 4.0) icons

File ( image 12.61 MB)


Cartoons of various lunar and Mars rovers with lines behind them showing the distances they travelled. Text in Arabic

Record-Breaking Off-Earth Driving: Rovers on Mars & the Moon

image

Caption: Part of the Simplifying Astronomy for Arabic Speakers project, this infographic highlights the longest distances traveled by rovers on Mars and the Moon, showcasing space exploration’s progress. Top Rovers & Their Achievements Mars: NASA’s Opportunity holds the record, covering 45.16 km between 2004–2018. Moon: The Soviet Lunokhod 2 leads with 39 km, followed by Apollo rovers: Apollo 17: 35.74 km Apollo 15: 27.8 km Apollo 16: 27.1 km Mars vs. Moon: Different Challenges 1. Martian Terrain – Mars has a thin atmosphere, dust storms, and rugged landscapes, requiring durable, long-term rovers. 2. Lunar Terrain – The Moon’s cratered surface lacks an atmosphere, allowing easier movement but with shorter mission durations. 3. Mission Longevity – Mars rovers operate for years, while Apollo lunar rovers were used briefly. Future Rovers & Expectations Curiosity may reach 42.195 km, making it one of Mars' most traveled rovers. Yutu-2 (China) continues exploring the Moon since 2019. Conclusion These record-breaking distances showcase technological advancements in planetary exploration. With continued innovation, future rovers will go even further, paving the way for ambitious human missions beyond Earth!
Credit: Ali Al-Edhari ; adapted from the original by NASA/JPL-Caltech

Glossary Terms: Rover
Categories: Space Exploration

Language: Arabic
Script: Arabic

License: Creative Commons Attribution 4.0 International (CC BY 4.0) Creative Commons Attribution 4.0 International (CC BY 4.0) icons

File ( image 1.66 MB)


Jupiter with coloured horizontal bands of clouds. The shadow of the moon Io is seen as a dark circle in the top left

Jupiter, Io and its shadow, by Ralf Burkart, Germany

video
Created for the OAE

Caption: First place in the 2021 IAU OAE Astrophotography Contest, category Galilean moons. This time-lapse of Jupiter taken in 2017 from Germany beautifully illustrates the transit of one of the Galilean moons, Io, in front of Jupiter. As this is simply a moon casting a shadow on a planet it is equivalent to a lunar eclipse on Earth observed from further away. While the shadow of the moon is clearly visible from the beginning, it might be difficult to spot the moon itself against the background of the beautiful atmospheric bands of Jupiter the first time the video is seen. Watching it repeatedly allows appreciating the rapid motion and rotation in this fantastic observation.
Credit: Ralf Burkart/IAU OAE

Glossary Terms: Galilean Satellites , Gas Giant , Io , Jupiter , Moons , Orbit , Outer Planets , Planet , Transit
Categories: Solar System

License: Creative Commons Attribution 4.0 International (CC BY 4.0) Creative Commons Attribution 4.0 International (CC BY 4.0) icons

This file on Zenodo ( video 12.64 MB)


A yellowish surface divided into roughly 150 small irregular cells, delinated by smudgy, darker, irregular lines.

High-resolution image of the surface of the Sun

image

Caption: This high-resolution image of a small portion of the outermost visible "surface" of the Sun (the photosphere) covers an area 36,500 by 36,500 km. It was one of the first images taken by the Daniel K. Inouye Solar Telescope, as part of the telescope's Science Verification Phase. Each of the cells that are visible is about the size of the US state Texas, or of France, or of Afghanistan, or of Somalia. In the brighter centers of these cells, plasma from the underlying regions rises to the surface, cools off, and then sinks down again at the location of the darker lanes delineating the cells. In these dark lanes we can also see the tiny, bright markers of magnetic fields.
Credit: NSO/NSF/AURA
Credit Link

Glossary Terms: Photosphere , Granulation
Categories: The Sun

License: Creative Commons Attribution 4.0 International (CC BY 4.0) Creative Commons Attribution 4.0 International (CC BY 4.0) icons

File ( image 17.04 MB)


First Previous Page 5 of 7 Next Last