The moon orbits around the earth every 29.5 days and since our months typically have 30-31 days that leaves some leftover time (0.5-1.5 days). Eventually that adds up and we get an extra cycle in one month, and that means an extra full moon 다운로드. Typically, months only get one full moon and so having two is pretty rare, happening every 2.7 years.
Hence, the phrase, “once in a blue moon,” which is a lot like saying “once in about 3 years” 다운로드.
I love this stuff (orbits, planets, stars) and have been a star-gazer since I was a kid. If you are too, then you can enjoy the “blue moon” this Friday, August 31, 2012 싱글리니지 다운로드.
Yep, it’s been around three years since the last one (2.67 years to be exact, the last blue moon was on New Year’s Eve – Dec 31, 2009) 다운로드. I also think you should try, at whatever the cost, to say “once in a blue moon” about something. Think of something you know you won’t do or won’t happen until July 2015 (the next blue moon) 다운로드.
Also, the moons aren’t actually blue.
**Source: Space.com & Infoplease
Continue reading It happens once in a blue moon (and that’s this Friday)
All 786 known planets, to scale.
“This” (tiny gray box) is our solar system. The rest of these orbit other stars and were only discovered recently 다운로드. Most of them are huge because these are the kind we learned to detect first, but now we’re finding that small ones are actually more common.
We know nothing about what’s on any of them 냉탕에상어. With better telescopes that would change.
This is an exciting time.
Find the original graphic on XKCD icube erp download.
Last week, in the corners of the Internet devoted to outer space, things started to get a little, well, hot. Voyager 1, the man-made object farthest away from Earth, was encountering a sharp uptick in the number of a certain kind of energetic particles around it 윈도우 7 언어팩 다운로드. Had the spacecraft become the first human creation to “officially” leave the solar system?
It’s hard to overstate how wild an accomplishment this would be: A machine, built here on Earth by the brain- and handiwork of humans, has sailed from Florida, out of Earth’s orbit, beyond Mars, beyond the gas giants of Jupiter and Saturn, and may now have left the heliosphere — tiny dot in the universe beholden to our sun Oleview download. Had it really happened? How would we know?
We’re not quite there yet, Voyager’s project scientist and former head of NASA’s Jet Propulsion Lab, Edward Stone, told me 다운로드. The spacecraft is on its way out — “it’s leaving the solar system” — but we don’t know how far it has to go or what that transition to interstellar space will look like 월드컵 맞고 다운로드.
Keep reading – Get Ready, Because Voyager I Is *This Close* to Leaving Our Solar System
Continue reading Voyager I – about to leave our Solar System