The Solar System | Page 5 of 10 | Astronomy.com

Robotic Spaceflight, Science, Solar System

Mars could have oceans’ worth of liquid water buried in its crust

Saturn’s moon Mimas, floating above the planet’s rings, might conceal a liquid ocean beneath its surface.

Saturn’s moon Mimas may hide a surprisingly young ocean

Artist's rendition of asteroid Psyche

Could Psyche be the core of the planetesimal that struck Earth and formed the Moon?

Starmus kicked off a spectacular concert event open to the public in Bratislava, which attracted some 25,000 to 30,000 people who flocked to the site. The brilliant electronic musician Jean-Michel Jarre took to the stage, aided by lasers and fireworks, and hosted special guest Brian May of Queen. Credit: David J. Eicher.

Science, Solar System

Starmus spotlights planet Earth: This Week in Astronomy with Dave Eicher

Now far from the Sun in the outer solar system, the strange interstellar object known as ‘Oumuamua is depicted here as it’s approached by a questing spacecraft. Project Lyra is hoping to launch such a craft to explore our first known visitor from another solar system and provide the detailed study scientists desperately seek.

Exotic Objects, Space Exploration

‘Oumuamua: Can we catch an interstellar interloper?

A color image of Pluto shows its heart-shaped section.

Science, Solar System

Is Pluto a planet? It depends.

Venus, the star Regulus, the Moon, Mars, and Mercury seen over the Badlands in South Dakota on Sept. 18, 2017. Credit: Gregg Alliss.

Astronomy for beginners, Science, Solar System

What it means for planets to align

HST image of Jupiter near opposition

Science, Solar System

How old is each planet in our solar system?

Artist's concept of Planet X

Could we find Planet Nine using JWST?

Hypothesized Planet Nine (artwork)

Does Planet Nine exist? The new evidence says yes.

Location of Jupiter's Trojan asteroids

How closely packed are Jupiter’s Trojan asteroids?

A volcano towers over its surroundings, the terrain shown in false-color yellows and oranges.

Science, Solar System

How Venus threw up on itself: This Week in Astronomy with Dave Eicher