Robert Walker

We are not at all vulnerable to a dinosaur killer asteroid. They have already found all the asteroids of 10 km and larger and none are headed our way at least until 2200.

We can’t map out all the co...

No, there is nothing at all to worry about. Nothing astronomical of any significance at all happens on that date. The only thing that happens is actually an absence of anything interesting - the vi...

You could do. But a much easier approach is to write your details as a comment on the question. Then link to that comment as your question source.

You can find the link to the comment from the date ...

Yes it can be. Depends on the situation. For instance a natural response to this question is to say “What particularly do you have in mind as an example?”

Do put in more details.

I know Quora has rem...

This is a recent meme that’s getting shared on facebook and elsewhere. Repeating the image from the question source:

This is a question that has gone viral recently. Most people answer “G”.

But look ...

Just to say - for old questions, the details get moved to a comment automatically. It seems to take a while for that to happen, so you may see no comments, and a day later the old details appear as...

The best solution I’ve seen so far is to put the question details in as a comment on the question. Then link to that comment in the source.

You can find the link to the comment by right clicking on ...

Yes of course, unless they are already liberated or Buddha. This is why it’s often not a good idea to just give everything away when you learn about Buddhism. It’s easy to give away your possession...

Yes. I can understand their reasons, that it permits lots of slightly different questions with inessential differences in the details, that are hard to merge. But people sometimes do have questions...

It’s going to be a bit clumsy for maths and science questions - which sometimes require you to set out the problem in some detail, and can't just present the problem in its entirety in the title. I...

The main risk is from ash. The further you are from the center, the less ash you get. This map from a computer simulation gives an idea of one possible outcome:

You’d get 1–3 millimeters thickness o...

It’s just fake news. People click on these stories and share them and chatter about them and so you get talk about them. But unlike the 2012 fake news stories, there isn’t that much talk about this...

Note, original question details are here:

Oh, for sure, it can have real roots. You can express it as [math]ax^2 = -c -bx[/math]

So, you are looking for an intersection of a quadratic with a straight line. It’s often going to...

I can’t find a genuine news story of this nature. There’s a lot of fake news out there about Nibiru. They are just totally made up stories and sometimes they can look convincingly like a real news website.

...

It’s the nearest small number rational approximation. You can use the method of continued fractions to get a series of best approximations

3/1, 22/7, 333/106, 355/113, 103993/33102, 104348/33215 etc.

...

That the historical Buddha was born perhaps as early as Thales of Miletus, at the time of the birth of Greek philosophy, and at any rate, before Plato. His traditional Therevadan birth date is 624 ...

If this is on Earth: water but frothed up with air, or perhaps - carbon dioxide?

If I can somehow arrange to have lots of air mixed in the top layers, and then less and less the further down I go, i...

Interesting question. The sun never goes dark, not for trillions of years. But it does have an interesting future

• Gets brighter gradually for maybe 5.4 billion years. All this time it is burning hyd...

Oh, I think it’s almost the opposite. If there is life already there, we probably can’t live there. First a bit of context about what exactly they hope to find.

WHAT TO ASTRONOMERS HOPE TO FIND IN T...