holes-凯发k8官网

15-09-23 nearly all black holes come in one of two sizes: stellar mass black holes that weigh up to a few dozen times the mass of our sun or supermassive black holes ranging from a million to several billion times the sun's mass. astronomers believe that med...

15-07-07 astronomers have found evidence for a large population of hidden supermassive black holes in the universe. using nasa's nuclear spectroscopic telescope array (nustar) satellite observatory, the team of international scientists detected the high-ener...

14-10-22 massive black holes spewing out radio-frequency-emitting particles at near-light speed can block formation of new stars in aging galaxies, a study has found. the research provides crucial new evidence that it is these jets of radio-frequency feedbac...

13-07-22 the european space agency/nasa solar and heliospheric observatory, or soho, captured this image of a gigantic coronal hole hovering over the sun's north pole on july 18, 2013, at 9:06 a.m. edt. coronal holes are dark, low density regions of the sun'...

13-01-18 swiss cheese plants' iconic leaves help them to avoid stress, according to a us scientist. 一位美国科学家发现，蓬莱蕉的标志性叶子能帮助它们远离压力。 the monster leaves can reach up to 90cm long their familiar hole-riddled leaves allow the plants to...

12-07-18 can you tell me what fish net is made, ann? a lot of little holes tied together with strings. replied the little girl. 你能告诉我鱼网是什么做的吗，安？老师发问道。 把许多小孔用绳子栓在一起就成了鱼网了。小女孩回答道。...

12-04-18 can you tell me what fish net is made, ann? a lot of little holes tied together with strings, replied the little girl. 你能告诉我鱼网是什么做的吗，安？ 老师发问道。 把许多小孔用绳子栓在一起就成了鱼网了，小女孩回答道。...

11-12-06 university of california, berkeley, astronomers have discovered the largest black holes to date - two monsters with masses equivalent to 10 billion suns that are threatening to consume anything, even light, within a region five times the size of our...

11-10-30 fat doughnut-shaped dust shrouds that obscure about half of supermassive black holes could be the result of high speed crashes between planets and asteroids（小行星） , according to a new theory from an international team of astronomers. the scienti...

11-02-25 massive waves in giant magnetic holes on the surface of the sun have been discovered for the first time by solar scientists from the university of sheffield and queen's university belfast, something that will bring experts a step closer to unlocking...