Christina Cohenreplied to: RE: Scientists working from home?

Hi Aileen, I think most of us are having to stay home right now; many of us are on our second week (at least) of doing so. Overall, I would say ...

3/27/2020

Christina Cohenreplied to: RE: black hole

No, the Sun is too small to become a black hole at the end of its life. In order to collapse and form a black hole, a star typically has to be about ...

3/26/2020

Christina Cohenreplied to: RE: Why is NASA trying to get to the sun?

Excellent question! The Sun is actually a pretty ordinary star as far as astronomy goes, but it is special because it is close enough that we can stu...

3/25/2020

Christina Cohenreplied to: RE: Does the sun spin?

Absolutely! The funny thing about the Sun is that because it is a ball of gas and not a solid body like Earth, all of it doesn't rotate at the same r...

3/25/2020

Christina Cohenreplied to: RE: Volts from sun?

Power, not voltage, is really the thing to think about. The amount of volts you get from a power supply depends on the current you need. If you need...

3/24/2020

Christina Cohenreplied to: RE: writing a book

I think it depends on what kind of book you want to write! If you want to write a cool science fiction book featuring the Sun I think you just need...

3/24/2020

Christina Cohenreplied to: RE: differences of flare/cme/solar wind?

The Sun is an active place so there is a lot going on all the time and it is easy to get confused about these terms. The solar wind is particles (m...

3/24/2020

Christina Cohenreplied to: RE: Is the Sun perfectly round?

It turns out that the Sun is pretty close to perfectly round. There was some thought that it would have a slight bulge near the equator because it is...

3/23/2020

Christina Cohenreplied to: RE: sun

Hi Vayda, Actually the Sun isn't really yellow/orange. It emits light over a range of wavelengths, including those that we can't see with our eye ...

3/23/2020

Christina Cohenreplied to: RE: Magnetic effects

Hi Lauren, One thing that the Sun's magnetic field does do is create a bubble which contains our planets (and more). This is called the Heliospher...

3/20/2019

Christina Cohenreplied to: RE: careers

Hi Stephanie, Kris gave a great answer and I just want to add another comment. While there is definitely competition, particularly in getting fu...

3/20/2019

Christina Cohenreplied to: RE: Star Color

Hi Otis, That's a great question, particularly since we often refer to things as 'red hot' not 'blue hot'. Any matter that is at a temperature abo...

3/20/2019

Christina Cohenreplied to: RE: Question

Terry's right - definitely don't look at the Sun during the day. I think some of the confusion about whether you need eclipse glasses or not for lo...

10/26/2018

Christina Cohenreplied to: RE: Is the green flash real?

It is definitely real. I haven't seen one, but I know people who have. The atmospheric conditions need to be just right and you need to have a prett...

10/25/2018

Christina Cohenreplied to: RE: Asteroids Hitting Sun

I don't think there have been any observations of an asteroid hitting the Sun. But, since asteroids are a bit hard to see, it might have happened wit...

10/25/2018

Christina Cohenreplied to: RE: Scientist parents?

I think it does, but it certainly isn't necessary. My mother is a physicist (although in a different area than me) and my dad is a mathematician. ...

10/23/2018

Christina Cohenreplied to: RE: Sunrise on Venus

Yeah, Venus is an odd duck. Unlike Earth (and all the other planets except for Uranus, which is almost lying on its side in terms of spinning), Venus...

10/23/2018

Christina Cohenreplied to: RE: Sports

Although soccer is my sport of choice, I definitely follow the LA Rams (so glad to have them back in LA!)... and of course, we always have a superbowl...

10/22/2018

Christina Cohenreplied to: RE: Solar Flares

Hi, On the Sun there are areas with really complicated loops of magnetic fields. Sometimes these loops twist around or cross each other and then '...

3/23/2018

Christina Cohenreplied to: RE: internships and science/space camps?

Hi, I didn't do any of these things as a kid, but there also weren't as many available back then. I would say that it isn't critical to do them,...

3/23/2018

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