What are you thinking?

View Results

Loading ... Loading ...
1 Star2 Stars3 Stars4 Stars5 Stars (Rate This)
Loading...Loading...

Pluto, formal designation 134340 Pluto, is the second-largest known dwarf planet in the Solar System and the tenth-largest body observed directly orbiting the Sun. Originally classified as a planet, Pluto is now considered the largest member of a distinct population called the Kuiper belt. This planet was discovered 80 years ago today, and astronomers are still arguing over what it is.

http://static.thetechjournal.net/wp-content/uploads/HLIC/12e501c6d522c433846839d3a53b711e.jpg

The oddball world, downgraded from planet to dwarf planet status in 2006 and then later reclassified, is really out there. Scientists aren’t sure exactly what Pluto’s made of, how it formed, or why it orbits so oddly compared to the eight primary planets. And there are at least two camps of astronomers when it comes to defining Pluto. Some just think of it as a planet, others call it a dwarf planet or a plutoid.

While NASA has a spacecraft en route to Pluto and slated to make close-up images in 2015, the best images of Pluto so far, taken this year by the Hubble Space Telescope, are mere smudges.

Pluto’s Discovery

The hunt for Pluto began in 1905 when Percival Lowell (of Martian Canal infamy) hypothesized about the possibility of a Planet X in the outer solar system.

Lowell died before Pluto was discovered. Clyde Tombaugh found it on Feb. 18, 1930 in a concerted scan of the sky. Tombaugh compared two photographs taken at the Lowell Observatory and noted the object’s movement against the background of stars.

Most of Pluto’s orbit is out beyond that of Neptune. But the path is oblong, so Pluto spends part of its 248-year orbit – the time it takes to make one circle around the Sun – inside the track of Neptune.

Pluto’s path is also extremely inclined, by 17.1 degrees, to the main plane of the solar system where the other planets travel.

Asteroids also circle the Sun in the solar system’s main plane. So do some comets. But many comets, like Pluto, have highly inclined orbits. This similarity, plus Pluto’s small size – smaller than Earth’s Moon – led to its demotion.

Mysterious Pluto

Studies in 2003 showed that despite an almost nonexistent atmosphere, Pluto has wind and seasons and appears to have recently gone through a phase of global warming.

The leading theory for the formation of Pluto and its largest moon, Charon, is a wild one: A nascent Pluto was struck by another Pluto-sized object. Imagine a glancing blow and a lot of cosmic Silly Putty getting stretched and repacked into new spheres with new rotations. Observational evidence for this collision theory remain thin, however.

Charon is much bigger than any other moon in relation to the size of its host planet, further muddying Pluto’s status. Some astronomers think of the setup as a double planet.


Cyber Attack Attempted From China Schools

Sprint To Introduce 4G Smartphone By Mid-Year
You can also press the left/right arrow key on your keyboard to go to previous/next post
  On February 21, 2010(4 years, 8 months ago.)

Recent Products

Buy Now | Compare  
Buy Now | Compare  
Buy Now | Compare  
Buy Now | Compare  
Compare  

What Do You Think?

Loading Disqus Comments ...
Loading Facebook Comments ...

Recent Search

Recent Tutorials

Do you know that you can turn a shoe box into a phone projector? Don't believe this? See for yourself inside.
Apple has published a new guide detailing how Android users will be able to switch their contents from Android to iPhone.
The trick will let you to check your Facebook messages in the original app without downloading Messenger and it works with both iPhone or Android phone.
Want to block all disgusting ads from your android device? Read the tutorial to know how you can block ads on your Android and save data.
Want to repair your memory card? It's very easy to fix corrupted or damaged memory card. In fact you can fix it by yourself.
Are you the one who is frustrated because of the speed of your Android device? No worries, the article will help you increase the speed of that device.
Lately, Google has updated its Google Docs. Now users can crop, rotate, and add borders to images in a document without leaving Google Docs.
Adobe CS products are not free, but the good news is you can now download Photoshop CS2 & all other CS2 product completely free and it's absolutely legal.
At the beginning level, many people don't know how to use Gmail properly. For them, a here's a helpful guideline.
Skype now allows you to call directly from your Outlook account. Find the step-by-step installation process from this tutorial.
Close You Have To Login
User:
Pass:
Login With »Login With TwitterLogin With Facebook