Posts by 

Paul Scott Anderson

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.

Oceans of water on Mars deep underground?

Where did Mars' water go? A new study using data from NASA's InSight mission provides evidence for oceans of water on Mars, deep below the surface in the crust.

Asaph Hall finds Mars moon Phobos 147 years ago today

On this date in 1877, American astronomer Asaph Hall discovered Phobos, the larger of Mars' 2 moons. He discovered the other moon, Deimos, later that year.

‘Continents’ on Venus similar to those of early Earth?

A new study suggests that 'continents' on Venus, vast plateaus known as tesserae, may have formed in a very similar way to early continents on Earth.

Did meteorites create the moon’s atmosphere?

Did meteorites create the moon's atmosphere? A new study of soil samples - collected by Apollo astronauts in the 1970s - says yes.

When the DART mission struck an asteroid moon

Scientists analyzing data from the DART mission in 2022 have found new evidence of how the binary asteroid system of Didymos and Dimorphos originated.