故选A。2. D 根据第三段中“It is the brightest star in Canis Major.可知,它是大犬星座中最亮的恒星。故选D。3.C根据第三段中“Sirius is so bright that the ancientRomans thought it radiated extra heat towards the earth. "可知,天狼星是如此明亮,以至于古罗马人认为它向地球辐射了额外的热量。
however, it will not be as bright because light intensity decreases with distance squared. A searchlight 5 miles from you may look as bright as a penlight 6 inches (15 centimeters) away from you. The same is true
The Hertzsprung-Russell Diagram. The Sun, the 12 brightest stars of the Northern Hemisphere and the white dwarf companion stars to Sirius and Procyon are shown. Photo courtesy of NASA In 1924, the astronomer A. S. Eddington showed that the luminosity and mass of a star were related. The la...
As I had this big awakening in my own consciousness and really illuminated at this ottoman, this higher self-level, I could perceive. First of all, I could see in those moments, I could see 360 degrees in every direction and light so brilliantly bright. It was 10 times brighter than the...
So Venus will be considerably brighter than Sirius this week, but nowhere near as bright as the moon. It is bright enough to cast shadows, when observed on a moonless night from a dark location. Even though Venus is the brightest object in the night sky other than the moon, surprisingly ...
Cannabis plants are quite a bit more complex than a regular house plant, but my partner Sirius and I have dedicated years to showing the world that learning how to grow isn’t as crazy complicated as a lot of growers make it seem. Still, you need to learn this plant’s language if yo...
The cries of the driver and passenger likely also rang out as they got splattered with mud, meaning that spirits were definitely not bright and laughing all the way wasn't an option. So along came a piece of wood that protected the buggy's passengers from all the mud and slush, which ...
These grow lights are often used during the vegetative stage, which is the first stage of life. Many growers switch to more powerful grow lights in the cannabis flowering stage because because fluorescent lights are usually not bright enough to produce big yields (cannabis needs a lot of light...
The planet won't appear as big or bright again for another 12 years. A Shining Planet Jupiter is the largest planet in the solar system. Right now, it is three times brighter than Sirius, the brightest star in the sky. Only the moon outshines Jupiter. Around dusk on Monday, Jupiter, ...
The quiz is atrick quizbecause the answers to are all “the Sun.” If we don’t include the Sun in this quiz then we get very different answers and the answers are: Sirius is the brightest star (it is almost as bright as Jupiter), ...