这个类星体大约在 This quasar is only about 600, 大爆hearts;炸hearts;后的6、7亿年形成 700 million years after the big bang, 而这个黑洞的质量大约是 and this black hole weighs about 800 million times 太阳的8亿倍 as much as the sun. 它是迄今为止发现的最古老的类星体 Its the oldest quasar...
needs to know a little about prosody. Poems can be broken down into 3 parts; (1) The stanza: a group of lines set off from the other lines in a poem. It is the poetic equivalent of a paragraph in prose. In traditional poems, the stanza usually contains a unit of thought, much ...
And, in case you're worried, everything below is a mostly spoiler-free chronological timeline that will not ruin any of any major plot points of anything further on in the timeline. So, you can use this guide as a handy way to catch up without ruining much of the surprise of what’s...
The Milky Way is on a collision course with the nearby Andromeda Galaxy, and both will merge in about 4 billion years. Later on, other galaxies in our Local Group — the galaxies closest to us — will eventually combine. Residents of that future galaxy would have a much darker universe ...
To best see the Lyridmeteor shower, go to the darkest possible location, lean back and relax. You don't need any equipment like telescopes or binoculars as the secret is to take in as much sky as possible and allow about 30 minutes for your eyes to adjust to the dark. ...
Recently, Jorge Pearrubia, a senior academic at Edinburgh University, UK, and his team discovered something interesting: The mass of the Milky Way is only half as much as the mass of another nearby galaxy, Andromeda. This seems strange, and dark matter may explain why. ...
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you're watching TV in the same hour, it's an hour for smartphone, it's an hour for TV. So that's how it's counted 12 hours a day we spend with media. But if we zoom in a level, Ethan, how much of that time is digital and how much of that time is s...
You do not need to use the latest mirrorless camera to photograph the Milky Way, even a 10-year-old, entry-level DSLR camera is capable of a beautiful shot. As is the case with most astrophotography projects, the approach is much more important than the equipment itself. Let’s get into...
To best see the Lyridmeteor shower, go to the darkest possible location, lean back and relax. You don't need any equipment like telescopes or binoculars as the secret is to take in as much sky as possible and allow about 30 minutes for your eyes to adjust to the dark. ...