The biggest hurdle to humankind’s expansion throughout the solar system is the prohibitive cost of escaping Earth’s gravitational pull.

The mystery of whether microbial alien life might inhabit Enceladus, one of Saturn's 83 moons, could be solved by an orbiting space probe.

Perhaps the biggest hurdle to humankind’s expansion throughout the solar system is the prohibitive cost of escaping Earth’s gravity.

At the center of the new company is an evolvable and scalable space platform, called a robotic outpost, that will serve multiple users.

The biggest hurdle to humankind’s expansion throughout the solar system is the prohibitive cost of escaping Earth’s gravitational pull.

Swirling around the planet’s equator, the rings of Saturn are a dead giveaway that the planet is spinning at a tilt.

Scientists use modern rocks, moon samples and meteorites to figure out when and how the Earth and moon formed and what they had looked like.

Perhaps the biggest hurdle to humankind’s expansion throughout the solar system is the prohibitive cost of escaping Earth’s gravity.

The surface of the moon and rocky planets, Mars in particular, are of huge interest to anyone trying to explore our solar system.

Scientists can use modern rocks, moon samples and meteorites to figure out when and how the Earth and moon formed over 4.6 billion years ago

Samples from the Moon's Oceanus Procellarum may be able to calm at least one scientific squall: the source of lunar water.

New research suggests that volcanoes may have left another lasting impact on the lunar surface: sheets of ice that dot the moon’s poles.

The robotic explorer GLIMPSE, created at ETH Zurich has made it into the final round of a competition for prospecting resources in space.

Scientists have grown plants in soil from the Moon, a first in human history and a milestone in lunar and space exploration.

Soil on the moon contains active compounds that can convert carbon dioxide into oxygen and fuels, scientists in China report.

The sensor is a surveying tool for both navigation and science mapping, able to create ultra-high-resolution 3D maps at centimeter precision

Hydrogen and oxygen escaping from Earth’s upper atmosphere and combining on the moon could be one of the sources of the known lunar water.

Earth-based telescopes that look that far back to the big bang (BB) 13.8 billion years ago are unable to resolve the relevant details.

The ambitious project aims to preserve humankind – and animal-kind, plant-kind and fungi-kind – in the event of a global crisis.

NASA has more than 20 Earth-observing satellites that give researchers a global perspective on the interconnected Earth system.