Io

On this day in 1979, Voyager 1 discovered volcanic eruptions on Jupiter's moon, Io.

That clued scientists in that the moons of the gas giants might be very different than assumptions.

Hard On Mars

The drill bit on NASA's InSights lander has hit something hard below the surface of Mars.

Engineers are taking a couple weeks to determine how to proceed.

Kepler

NASA's Kepler planet hunting probe was launched ten years ago today.

Kepler has found more than 2,000 exoplanets, with more still to be confirmed.

Mars Water

A new study suggests huge impacts were responsible for the periods of surface water on Mars.

It probably weakens the case for life.

Rings

On this date in 1979, Voyager 1 discovered Jupiter's rings.

Since then, Uranus and Neptune have also been shown to have rings, which are likely transitory features.

Crew Dragon

SpaceX successfully launched its Crew Dragon capsule on an unmanned test flight this morning.

If all goes well, the company wants to begin flying astronauts as early as July.

Planet Nine

A new study holds Planet Nine, if it exists, will likely be found within a decade.

The study says it's likely 5 to 10 times as massive as Earth.