What has changed in physics since the beginning of PF?

[tribdog]

When I first started posting on PF the big question in physics was whether the Universe would expand forever, or if gravity would eventually win and cause a big crush. Since then we've learned that not only is the Universe expanding, it is accelerating. This is the biggest change in what we know about physics that I can think of. What other major changes has there been since PF started?

 

[tribdog]

I guess Pluto becoming a non planet is up there too.

 

[cristo]

When I first started posting on PF the big question in physics was whether the Universe would expand forever, or if gravity would eventually win and cause a big crush. Since then we've learned that not only is the Universe expanding, it is accelerating.

Was PF around pre-1998?

 

[Ivan Seeking]

That's what I was about to post. I first heard about the acceleration in "official" terms in March of 1999, and it was being discussed informally at least a year before that.

 

[Greg Bernhardt]

Was PF around pre-1998?

We started Spring of 2001

 

[tribdog]

I hadn't heard about it until about 2003 and that's what's important

 

[Oberst Villa]

We started Spring of 2001

So you were probably still worrying about the solar neutrino problem ?