Engineering

Researchers advance solar material production

A Washington State University team has developed a more efficient, safer, and cost-effective way to produce cadmium telluride (CdTe) material for solar cells or other applications, a discovery that could advance the solar ...

Energy & Green Tech

Saving water when the sun shines

Deserts and other sun-drenched regions are the ideal location for concentrated solar power plants, but where sunlight is abundant, water tends to be scarce and dust covers everything. The EU-funded project MinWaterCSP develops ...

Energy & Green Tech

Stability assessment and reporting for perovskite photovoltaics

Improving the long-term stability of perovskite solar cells, which is crucial for the use of this pioneering technology—this is the topic of a paper published in the journal Nature Energy by an international research team, ...

Energy & Green Tech

Sustainable markets must be created and defended

Creating sustainable markets poses particular obstacles: A sustainable market must be continuously shaped and reshaped. This is the conclusion of three researchers in business administration and innovation at Linkoping University, ...

Energy & Green Tech

Qatar signs $470 mn solar deal

Gas-rich Qatar signed a $470-million deal on Sunday to build its first solar energy plant, capable of meeting up to one-tenth of peak national power demand.

Computer Sciences

Patent talk: Mobile device with solar panels

Are we to expect to see a future Surface Pro with solar panels? Microsoft has thought about a solar power idea as apparent in a patent that the tech giant filed with the USPTO, namely, "Mobile device cover with integrated ...

Energy & Green Tech

Declining renewable costs drive focus on energy storage

An oft-repeated refrain—the sun doesn't always shine, and the wind doesn't always blow—is sometimes seen as an impediment to renewable energy. But it's also an impetus toward discovering the best ways to store that energy ...

Energy & Green Tech

Trump administration says it will approve largest solar farm in US

Federal officials plan to approve a massive solar farm with energy storage in the desert outside Las Vegas, paving the way for a $1-billion project that will provide electricity to Nevada residents served by billionaire Warren ...

Energy & Green Tech

Flexible thinking on silicon solar cells

Crystalline silicon solar panels could be just as effective when incorporated into stretchy wearable electronics or flexible robot skin as they are when used as rigid rooftop panels. KAUST researchers have devised a way to ...

Energy & Green Tech

Solar power from 'the dark side' unlocked by a new formula

Most of today's solar panels capture sunlight and convert it to electricity only from the side facing the sky. If the dark underside of a solar panel could also convert sunlight reflected off the ground, even more electricity ...

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Solar System

The Solar System[a] consists of the Sun and those celestial objects bound to it by gravity, all of which formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago. The Sun's retinue of objects circle it in a nearly flat disc called the ecliptic plane, most of the mass of which is contained within eight relatively solitary planets whose orbits are almost circular. The four smaller inner planets; Mercury, Venus, Earth and Mars, also called the terrestrial planets, are primarily composed of rock and metal. The four outer planets, Jupiter, Saturn, Uranus and Neptune, also called the gas giants, are composed largely of hydrogen and helium and are far more massive than the terrestrials.

The Solar System is also home to two main belts of small bodies. The asteroid belt, which lies between Mars and Jupiter, is similar to the terrestrial planets as it is composed mainly of rock and metal. The Kuiper belt (and its subpopulation, the scattered disc), which lies beyond Neptune's orbit, is composed mostly of ices such as water, ammonia and methane. Within these belts, five individual objects, Ceres, Pluto, Haumea, Makemake and Eris, are recognised to be large enough to have been rounded by their own gravity, and are thus termed dwarf planets. The hypothetical Oort cloud, which acts as the source for long-period comets, may also exist at a distance roughly a thousand times beyond these regions.

Within the Solar System, various populations of small bodies, such as comets, centaurs and interplanetary dust, freely travel between these regions, while the solar wind, a flow of plasma from the Sun, creates a bubble in the interstellar medium known as the heliosphere, which extends out to the edge of the scattered disc.

Six of the planets and three of the dwarf planets are orbited by natural satellites, usually termed "moons" after Earth's Moon. Each of the outer planets is encircled by planetary rings of dust and other particles.

This text uses material from Wikipedia, licensed under CC BY-SA