Activity Feed

Terry Kucerareplied to: RE: What color is the sun?

Hi, The sun gives out a whole range of colors, which ends up meaning it is effectively white. White is what you get when you combine all the colors ...

2 months ago

Terry Kucerareplied to: RE: Sun's fuel/energy

If you are asking about the fuel the powers the Sun in its core - that is hydrogen combining to form helium and energy in a process called nuclear fu...

2 months ago

Terry Kucerareplied to: RE: How heavy is the sun?

Hi, The Sun has a mass of 1.989 x 10^30 kilograms That means 1.98 times a 1 with 30 zeros after it (a trillion trillion million). That is a lot! Th...

2 months ago

Terry Kucerareplied to: RE: What is at the center of the sun?

Hi, The sun is mostly made up of hydrogen the lightest of all the elements. In the center of the sun, the sun's core, the pressures are so high from ...

2 months ago

Terry Kucerareplied to: RE: How was the sun created?

Hi, We think the Sun and the rest of of the solar system were created from a big cloud of gas and dust left over from earlier stars that exploded in ...

2 months ago

Terry Kucerareplied to: RE: Being a scientist

You are right that we can't go right up to the areas we study and touch them in person! Many of us do a lot of our work on computers from our desk...

10/25/2019

Terry Kucerareplied to: RE: How close can we go to the sun?

Well, right now we are trying to figure that out. NASA's Parker Solar Probe Spacecraft is currently orbiting closer and closer to the Sun. It recently...

10/23/2019

Terry Kucerareplied to: RE: the sun

Hi, The more massive the star, the faster the material in the core is used up to power the star. So, the larger, hotter stars have shorter lives than...

10/22/2019

Terry Kucerareplied to: RE: Galaxies

Hi, There are a number of "dwarf" galaxies near our galaxy, the Milky Way. The closest currently know in the Canis Major Dwarf Galaxy, which is 25,00...

3/18/2019

Terry Kucerareplied to: RE: Magnetic effects

Hi Lauren, I think to say that the magnetic field controls the planets might be a bit strong, but it certainly effects them. Magnetic fields were fi...

3/18/2019

Terry Kucerareplied to: RE: solar storms

Hi Cynthia, There have been observations of aurora on Uranus and Neptune See here for some pictures of aurora on Uranus: https://www.nasa.gov/image...

3/18/2019

Terry Kucerareplied to: RE: Light

Hi, The speed of light in a vacuum (i.e., empty space), is a constant at a terrifically fast 186,282 miles per second (299,792 kilometers per second)...

10/29/2018

Terry Kucerareplied to: RE: Sun

Hi, Compared to things we think about in our regular lives, the Sun is huge. It’s diameter is 1,390,000 km (about 864,000 miles) across. You could fi...

10/26/2018

Terry Kucerareplied to: RE: Stars dying

Hi, Astronomers have developed ideas about how stars change over time by studying large numbers of stars and using physics to model how they develop....

10/26/2018

Terry Kucerareplied to: RE: Question

Hi, You really should not look right at the Sun during the day – especially don’t stare at it. That can cause eye damage. At the time of totality ...

10/26/2018

Terry Kucerareplied to: RE: colors of sun

Hi, Many of those images you are seeing are of the Sun in wavelengths of light (colors) humans can’t see – like ultraviolet and x-rays. We color code...

10/26/2018

Terry Kucerareplied to: RE: space weather

Hi, Changes on the sun can affect the environment around Earth and other places in the solar system, affecting spacecraft, communications, power sys...

10/26/2018

Terry Kucerareplied to: RE: Solar Mission

Hi Andrea, I'm not involved, but I certainly know people who are. They might be too busy to be doing Solar Week right now. I think it should be a ...

10/30/2017

Terry Kucerareplied to: RE: sunspots

Hi Kevin, The shortest explanation I can give is that in the sunspot umbra the magnetic field stops energy from getting to the sun's surface, but i...

10/27/2017

Terry Kucerareplied to: RE: other planets

Hi Tamara, Yes, I do. There have been a large number of planets around other stars (exoplanets) discovered at this point. This is very exciting - whe...

10/27/2017