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blademan9999
  • Member for 3 years, 2 months
  • Last seen more than a month ago
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I live in Hong Kong.

I really like maths.

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question
12
How are the masses of solitary stars weighed?
Dec 22, 2022
answer
11
Why do we say that gravitational waves travel at the speed of light, when they can escape a black hole and light cannot?
Aug 1, 2023
question
9
Why did it take so long for SN1987A to reach peak brightness?
Aug 3, 2023
question
6
Which star has the highest known metallicity?
Jun 12, 2023
question
5
Proportion of oxygen in a typical white dwarf
Jun 12, 2023
question
5
Why don't we use the Voyager/Pioneer etc space probes to measure stellar parallax?
Jun 19, 2023
question
5
When was/will Polaris's declination be maximised?
Apr 24, 2022
question
5
When's the most recent time that we could have missed a supernova?
Jun 1, 2022
question
5
When did our neutrino detectors become sensitive enough to detect supernovas in the core of the Milky Way?
Jun 1, 2022
question
4
If a Milky Way supernova were to happen, how long would it take for astronomers to be notified?
Jul 7, 2023
Top network posts
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29
Wouldn't Miller's planet be fried by blueshifted radiation?
23
Why are there no known white dwarfs between 1.35 to 1.44 solar masses?
23
How does Titan have hydrogen in its atmosphere?
21
Is there a smooth, preferably analytic function that grows faster than any function in the sequence $e^x, e^{e^x}, e^{e^{e^x}}...$
19
How close does a photon have to get to a black hole to do a full loop?