Alessandra Pacinireplied to: RE: sun/stars black hole

Hi, Alexis. The black holes are little start very, very dense, with a huge gravitational field that is so strong that pulls even electromagnetic waves...

4 months ago

Alessandra Pacinireplied to: RE: ham radio

Hi Viola, I'm studying for the first exam to became a HAM radio, I think it is awesome! There are many Ham radio scientists around! The HamSCI team ...

4 months ago

Alessandra Pacinireplied to: RE: solar power

Hi Serena, I moved recently to Puerto Rico (last year, just after the solar eclipse), where I'm working at the Arecibo Observatory. The first thing we...

4 months ago

Alessandra Pacinireplied to: RE: eclipse

Hi Erin! I did, I did! I took all of my family to South Carolina last August, installed a passive radio antena* at the backyard of our dear cousin who...

4 months ago

Alessandra Pacinireplied to: RE: solar storm

Hi Heny! Yes, the solar activity produces effects much further than the solar system. It drives changes inside a region called Heliosphere, which is ...

4 months ago

Alessandra Pacinireplied to: RE: sunspots

Hi, Vicki! The first registers of sunspots were made by the Chineses more than 3 thousands years ago. But only in 1843, somebody (the German Heinrich...

4 months ago

Alessandra Pacinireplied to: RE: most interesting fact

Hi Sylvie! In my opinion, everything related to the solar magnetic activity facinates me! *The way the active regions are created, how they devel...

4 months ago

Alessandra Pacinireplied to: RE: atmosphere

Hi Shawn, in 1731, a french philosopher called Jean-Jacques Dortous de Mairan realized that the occurrence of Auroras Borealis was correlated to the ...

4 months ago

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