It is the center of our solar system (太阳系). A solar system is made of planets (行星), moons, and other objects (物体). The Sun looks very big because it is much closer to other stars. We are so close to the Sun that we can feel its heat and enjoy its light. The Sun is...
absorb– v.to take in (something, such as a liquid) in a natural or gradual way stable– adj.in a good state or condition that is not easily changed or likely to change galaxy– n.any one of the very large gr...
τ Ceti features in many science fiction novels by virtue of the fact that it is the nearest single (non-multiple) solar-type star to the Sun. In 2012 it was suggested that the star might contain a system of five planets. GJ 1061 is so small, it is estimated to be close to the lo...
1. Home to our Solar System2. A disk-shaped system, Earth is offset (8.5 kpc away) from the center of the disk.3. The thickness of the disk is approximately 700 parsecs.4. The mass is several hundred billion to ...
Descending from the Belt is a smaller line of three stars, the Orion Nebula or known as Orion’s scabbard. This nebula is one of the brightest in the sky and can be seen with the naked eye. It is also one of the nearest areas of active star formation to our solar system. ...
Close Binary Stars are defined as a pair of stars that are formed together and closely orbit each other. The gravitational influence of one star on the other can cause them to evolve differently from single stars of comparable masses.
If Venus is so bright and close to us, isn't it a better choice for human exploration than Mars? It is closer to Earth than Mars and it's closer to Earth in size. The closer distance to the sun means solar power would be easier to generate (产生) as well. However, with a temper...
Closest known flyby of star to our solar system: Dim star passed through Oort Cloud 70,000 years agoScience Daily - February 17, 2015 Astronomers from the US, Europe, Chile and South Africa have determined that 70,000 years ago a recently discovered dim star is likely to have passed throu...
6.When we get closer to the moon,we shall feel its gravity pulling us... 当我们靠近月球时,我们会感到它的重力在拉我们…… get close to 走近,靠近 close to 离……很近,在……附近 be as close as lips to teeth 唇齿相依 e.g.Come close to me.再靠近我一点。 Someone followed clo...
A SWARM of baby stars live just a fraction of a light year from our galaxy’s centralsupermassive black hole. But no one can explain how they ended up so close in their short lifetimes. Stars form by coalescing out of a cloud of dust and gas. But this can’t happen ...