‘Jellyfish’ on Mars: Image from Curiosity rover goes viral

What is this odd 'jellyfish' on Mars? Possibilities include a cosmic ray artifact, an electronic artifact and what astronomers call a "transient phenomenon." The image went viral this week!

Meet a Saturn-sized exoplanet with Earth-like temperatures

TOI-199b is a warm Saturn-sized exoplanet 330 light-years away. New observations by the Webb space telescope show there is methane in its atmosphere.

Huge rift valleys on Venus hint at a still-living planet

A new study of huge rift valleys on Venus shows that they are likely younger than previously thought, and might still be geologically active today.

Fastest star in the galaxy could unlock black hole secrets

Astronomers have discovered the fastest star in the galaxy. It orbits the supermassive black hole at the center of our galaxy and could reveal its spin.

Could there be life in helium atmospheres on exoplanets?

Is life in helium atmospheres on exoplanets possible? A new study says that there are no barriers to life on worlds with helium-dominated atmospheres.

How earthly microbes on the moon might survive in the shade

Microbes on the moon that hitch a ride on human astronauts could survive by using little nooks and crannies for protection from the harsh environment.

Voyager 2: Our 1st and only visit to Neptune

On this day, August 25, 1989, Voyager 2 visited Neptune. To this day, no other spacecraft from Earth has returned to the faraway planet.

Pluto demoted to dwarf planet 20 years ago today

Pluto is the largest of many small bodies in the outer solar system. That's partly why it was demoted from major planet to dwarf planet in 2006.

Pluto’s atmosphere is thinning toward a collapse

Scientists detected that Pluto's atmosphere is thinning as it moves farther away from the sun in its orbit. Is its atmospheric collapse already happening?

1st photo of Earth from the moon 60 years ago

As NASA plans to land astronauts on the moon with the Artemis IV mission in 2028, it's fun to see this 1st photo of Earth taken from the moon.