Tag Archives: astronomy

They knew it was coming

From the Daily Mail: Family holidays ruined by earliest Easter in 90 years

God Plays Dice refers to this column, introducing a nice discussion of how the date of Easter is calculated. At the end of it she refers back to it, commenting

And I have no sympathy for the people quoted in that article. They’ve known this was coming since 1752, when the UK changed over to the Gregorian calendar.

Via Slashdot

More bad news for Pluto fans

Eris is more massive than Pluto. After being reclassified from planet to “Kuiper Belt Object”, Astronomers have now determined that Pluto is not even the largest such object. Eris, being heavier and further away from the Sun, has the bragging rights, at least for now.

Looking at it the other way, if you insist that Pluto really is a planet, you now have to admit that Eris is as well.

Really Long Term Thinking

Cosmologists Predict A Static Universe In 3 Trillion Years

“When Dutch astronomer Willem de Sitter proposed a static model of the universe in the early 1900s, he was some 3 trillion years ahead of his time.”

Via Slashdot.

The de Sitter universe was one of the first cosmological models devised using General Relativity, and is widely discussed in Gen Rel textbooks–I have several in the basement. Nice to see the classics are still relevant :-)>