Activity Feed (Beta Version: 9.11.2.0)

Sabrina Savagereplied to: RE: Role models

Christina has some great names in her response, and I have to agree that there are so many great ones to choose from. I still greatly admire Carl Sag...

10/14/2020

Sabrina Savagereplied to: RE: Sun's magnetic field

Hi Tanya, That is a very astute question! And yes, it does indeed! The Sun experiences an approximately 22-year full magnetic cycle. In the ...

10/14/2020

Sabrina Savagereplied to: RE: Can water put out the sun?

Not a chance. :) Water puts out fire by cooling the source of the fire and by depriving it of the oxygen molecules that feed it. Stars are not o...

10/14/2020

Sabrina Savagereplied to: RE: unexpected outcome

All the time! One of the clearest examples from my experience was when one of our sounding rocket instruments experienced a failure during flight. T...

10/14/2020

Sabrina Savagereplied to: RE: solar flare

Hi Roger, Solar flares are the biggest explosions in the solar system! Flares are intense, rapid bursts of light (across wavelengths) observed...

10/14/2020

Sabrina Savagereplied to: RE: supernova / will sun explode/implode?

The sun is actually too small to explode (or implode to a neutron star or black hole), so it will never go supernova. It will instead become a red gi...

3/25/2020

Sabrina Savagereplied to: RE: hydrogen conversion

Great question! Over 4 billion kilograms (or about 500 million tons) of hydrogen is converted to energy every second in the sun's core via fusion. Ha...

3/25/2020

Sabrina Savagereplied to: RE: career current status

Hi Laurie, We were put on mandatory telework over a week ago, and all of the schools and colleges have been closed. My spouse also works at NASA s...

3/24/2020

Sabrina Savagereplied to: RE: sun brightness

The Sun's brightness slightly varies with its activity cycle, but only on the order of about 0.1% at most. This measurement is termed Total Solar Irr...

10/22/2019

Sabrina Savagereplied to: RE: Why study the sun

I'm so glad you asked! There are so many ways to answer this. I'll highlight just a few of the ones that I connect with the most. - The Sun is th...

10/22/2019

Sabrina Savagereplied to: RE: 2 scientist marriage

I agree with everything Laurel said and would add that when you factor in 2-scientists and kids, you have what's called the N-body problem! Chaotic s...

10/22/2019

Sabrina Savagereplied to: RE: Parker Solar Probe

Keep with PSP here! http://parkersolarprobe.jhuapl.edu/

10/22/2019

Sabrina Savagereplied to: RE: Objects Hitting the Sun?

Yep! Along with SOHO, the Solar Dynamics Observatory's Atmospheric Imaging Assembly has also caught a few comets as well. This comet totally disinte...

10/22/2019

Sabrina Savagereplied to: RE: Absolute zero in solar system

No. Even at the outer edges of the solar system there is enough radiation pressure to keep things well above absolute zero. Indeed, you would be har...

10/22/2019

Sabrina Savagereplied to: RE: Magnetic

Great question! The Sun is composed of ionized plasma, which is a soup of charged particles. By way of Maxwell's equations (namely, Ampere's law), t...

10/22/2019

Sabrina Savagereplied to: RE: Sun sets in different locations (TW)

What a fantastic experiment you performed! Yes, it would repeat exactly the same through another year over the same time period. What you are measuri...

3/22/2019

Sabrina Savagereplied to: RE: hobbies

Hi! I started out as a night time, ground-based observer studying Gamma Ray Burst afterglows. It was fantastic, but I was kind of summoned over to t...

3/23/2018

Sabrina Savagereplied to: RE: ham radio

Hi Viola, I do not personally, but several of my colleagues use ham radio. I didn't have any interest in it myself until reading Alessandra's respon...

3/22/2018

Sabrina Savagereplied to: RE: solar power

Hi Serena, We looked into putting solar panels on our roof, but the orientation of it was not conducive to providing much power to our home. As ef...

3/21/2018