A. Its distance from other stars B. Its age C. Its mass D. The amount of dust around it 相关知识点: 试题来源: 解析 C。解析:The size and brightness of a main-sequence star depend on its mass.表明主序星的大小和亮度取决于它的质量。反馈...
Magnitude 1.85 Alnitak (Zeta Orionis) on the left and magnitude 1.65 Alnilam (Epsilon Orionis) in the center shine at almost the same brightness, though Alnilam is almost twice as far away. The magnitude 2.4 star Mintaka (Delta Orionis) on Orion's right hip is quite a bit fainter. ...
The supermoon may look especially large to you, however, if it's very close to the horizon. But that has nothing to do with astronomy and everything to do with how the human brain works. This effect is called the "moon illusion" and may arise from at least a couple of different thin...
but the little rover has stayed alive for more than 15 years. NASA is expected to make a big announcement concerning the fate of the rover this Wednesday at 11 am. But first, let’s talk about what makes
Dolby Vision is gaining more traction across TVs, smartphones, service providers and 4K Blu-ray discs – but it's got hot competition from rival HDR formats.
The term “money piece” underscores how important it is for enhancing your facial features. After all, “the money piece is literally that pop that’s first seen when looking at someone’s hair color,” says Min, “also known as that ribbon of brightness that frames the face.” She joki...