Posts by 

Paul Scott Anderson

Scientists recreate exotic Martian ‘spiders’ for 1st time

NASA scientists say they have confirmed a theory about how Martian 'spiders' form in the southern polar regions: erupting bursts of carbon dioxide gas.

Why are Mars’ polar caps different from each other?

Mars' polar caps are generally similar, but they also differ in some some ways. A new study shows how the differing sublimation of CO2 ice plays a role.

Moon’s volcanoes were erupting only 120 million years ago

Scientists in China, studying samples brought back by the Chang’e-5 mission, say that the moon's volcanoes were active as recently as 120 million years ago.

Earth’s core has a huge, hidden donut shape

Scientists in Australia have discovered a huge donut-shaped region in Earth's core. The finding provides new clues about the dynamics of Earth's magnetic field.

Direct black hole images that are 50% clearer?

Astronomers with the Event Horizon Telescope Collaboration have developed a new technique that will produce direct black hole images with 50% better resolution.

Water on exoplanets is mostly hidden deep inside

A new study shows there is likely much more water on exoplanets than previously thought. Most of it would be hidden in a planet's interior.

New SETI search goes beyond our Milky Way

A new SETI search for extraterrestrial intelligence, by astronomers in Australia, is the 1st of its kind. It looked for technosignatures in distant galaxies.

Measuring the speed of winds on Mars using sound

Scientists have developed a new technique - using the travel time of sound - to measure the speeds of winds on Mars with greater accuracy than ever before.

Ancient Mars lake was larger than any on Earth

Lake Eridania is our earthly name for the largest known Mars lake. This ancient lake was bigger than any lakes on Earth. Where did it go?

Dinosaur-killing asteroid came from beyond Jupiter

An international team of scientists has determined that Chicxulub dinosaur-killing asteroid was carbonaceous and originated from the deep outer solar system.