1. solar
The ancient Greeks knew as much about the solar system as we do.
I want a car that runs on solar power.
Neptune is the eighth planet of the solar system.
Solar energy is a new source of energy.
Let's talk about solar energy.
The solar altitude is 20 degrees.
The power delivered by a one square metre solar panel is approximately one watt. Therefore it is currently difficult to harvest solar energy on a grand scale.
Solar storms next year could prove disastrous for the electrical grid.
Solar energy seems to offer more hope than any other source of energy, particularly because those areas most in need of water lie rather close to the equator and have a relatively clear atmosphere.
The total solar eclipse can be observed next year on June 22nd.
Solar energy may be able to play a significant role in our daily life.
In 2006, the International Astronomical Union decided to create a new category for solar system objects called "dwarf planets", and Pluto was reclassified as a dwarf planet.
Inspired by her teachers, Pharamp is going to start her solar career tomorrow.
In Japan solar heat is used more for solar water heaters than for electricity generation.
Since I installed solar panels on my house, my energy bill has been cut in half.
2. Sun
I love the sun.
Every day they killed a llama to make the Sun God happy.
The noonday sun beat down with dazzling brightness on the tennis court.
Do Japanese children really paint the sun red?
If you spend too much time in the sun without putting on sunscreen, you are likely to get a sunburn.
If you watch the sun setting on a warm, damp day, you can see the moisture changing the shape of the sun.
In England, in the summer, the sun rises at about 4 a.m.
You can no more expect me to change my opinion than expect the sun to rise in the west.
The anger that I had built up in me until then evaporated like a mist hit by the sun.
All I want to do during the dog days is stay indoors and keep out of the sun.
When I get up tomorrow morning, the sun will be shining and the birds will be singing.
It's getting dark early around here. The sun seems to drop like a rock when autumn rolls around.
Open from 10:30am to 4pm on Sat, Sun, and Mon.
Of course "Hayabusa" is not actually closing in on the Sun, it is just positioned as in the figure so that, seen from the Earth, it is on the opposite side of the Sun; this is called 'conjunction'.
In hopes of attaining superhuman powers, Christopher Columbus once stared at the sun for five minutes straight. It didn't work.