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Planetary Sciences 41 minutes ago

New photos show Jupiter's tiny moon Amalthea

It's tiny, but it's there. By now, we're all used to seeing amazing photos of Jupiter courtesy of NASA's Juno mission on a routine basis. Many of these are processed by volunteer "citizen scientists," and they show the swirling ...

Paleontology & Fossils 4 hours ago

Fossil captures starfish splitting itself in two—showing this has been happening for 155 million years

One of the wildest wonders of nature is the ability of some animals to reproduce by splitting in half. There is still so much we don't know about this process. So the discovery of a 155-million-year-old starfish fossil frozen ...

Astrobiology May 13, 2024

Tracing the origins of organic matter in Martian sediments

Although Mars presents a barren, dusty landscape with no signs of life so far, its geological features such as deltas, lakebeds, and river valleys strongly suggest a past where water once flowed abundantly on its surface. ...

Planetary Sciences May 13, 2024

Student's comparative analysis of primitive asteroids provides context for further research, future NASA missions

The primitive asteroids that UCF physics doctoral student Brittany Harvison studies carry with them traces of their origins and billions of years of our solar system's history.

Evolution May 10, 2024

Why evolution often favors small animals and other organisms

Small really does seem to be beautiful in evolutionary terms. The largest dinosaurs, pterosaurs and mammals may look impressive but these giants are vastly outnumbered by microscopic bacteria and single-celled algae and fungi. ...

Planetary Sciences May 8, 2024

Exploring the asteroid Apophis with small satellites

The author of a disaster novel couldn't have dreamed it up any better: On a Friday, the thirteenth of all days, the potentially dangerous asteroid (99942) Apophis will come extremely close to humanity.

Space Exploration May 7, 2024

Video: Using a hopping robot for asteroid exploration

One day the SpaceHopper will be deployed on space missions to explore relatively small celestial bodies such as asteroids and moons. These are thought to contain valuable mineral resources that could be of use to humankind ...

Astronomy May 3, 2024

Hungry, hungry white dwarfs: Solving the puzzle of stellar metal pollution

Dead stars known as white dwarfs, have a mass like the sun while being similar in size to Earth. They are common in our galaxy, as 97% of stars will eventually become white dwarfs. As stars reach the end of their lives, their ...

Planetary Sciences May 3, 2024

Earth from space: Namibian landforms

This image may resemble the surface of Mars, but it was actually captured by the Copernicus Sentinel-2 mission, revealing the stunning terrain of northwest Namibia.

Space Exploration May 2, 2024

Pulsed plasma rocket (PPR): Shielded, fast transits for humans to Mars

The future of a space-faring civilization will depend on the ability to move both cargo and humans efficiently and rapidly. Due to the extremely large distances that are involved in space travel, the spacecraft must reach ...

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