In order to break the cycle of poverty, we must first start with the heart. Catholic Online School is something very special, providing FREE Catholic Education to anyone, anywhere. Learn more about the Catholic Online School
Help us create new hope with your donation. This year, please consider making a donation of $5, $20, $50 or whatever you can to support Catholic Online School. Support Catholic Online School
Astronomers map the LMC, what is says about us may be the greatest thing
By Marshall Connolly (Catholic Online)
2/21/2014 (3 years ago)
Catholic Online (www.catholic.org)
Scientists have calculated the rotation rate of the Large Magellanic Cloud (LMC) using a combination of old and new scientific techniques. The result is a better understanding of how the Milky Way's closest companion is behaving.
The LMC as seen from Australia.
LOS ANGELES, CA (Catholic Online) - Astronomers using a combination of old-school methods and new technology have managed to precisely calculate the rate at which the Large Megallanic Cloud (LMC) a galaxy close to ours, is rotating.
The LMC is a satellite galaxy of the Milky Way and is gravitationally bound to ours. It is our closest companion galaxy and is visible only from the southern hemisphere.
Saint Dominic de Guzman, patron saint of astronomers
Scientists used redshift, which helps them to determine the relative motion of stars. As stars on one side of the galaxy move towards Earth, their light waves are compacted, which gives their light a distinctive "blue shift" when viewed through a prism and measured. Conversely, stars on the other side of the galactic disk, moving away from Earth, have their light "stretched" which gives them a "red shift."
This technique is nearly a century old and helps astronomers to determine which way objects are moving in space. Astronomers have now combined this with observations made by the Hubble Space Telescope use to track the minute movements of stars against the background of deep space. Those measurements combined with the red-shift measurements gave scientists what they needed to answer a very basic question about the LMC.
The LMC rotates once every 250 million years.
Okay, so what?
The measurements allow astronomers to build an accurate 3D model of the stars in the LMC and their motion. While the knowledge is inherently valuable to astronomers, it will also help them to prefect mapping techniques that will be used on stars much closer to our own.
Astronomers hope to map at least a billion stars in 3D within the next several years. Those billion stars, which will be the closest ones to Earth, make just 1 percent of the galaxy. They will also be star systems around which emerging technologies will allow us to hunt for planets as well as signs of life on those planets.
So the techniques practices on the LMC will eventually help us to study stars and planets closer to home and assist in the search for habitable world beyond our own. Eventually, in the next few million years, or even much less, humans will need to leave the Earth and colonize other worlds around other stars, if the human species is to survive indefinitely.
Although this may seem like impractical science fiction, we should remember there were times, over 2,400 years in the past, when people thought the Earth was flat and impermanent. To adopt a short-sighted view of the world and cosmos, and to ignore that which is beyond, is against our fundamental human nature, and contrary to the spirit which has allowed our species to flourish over tens of thousands of years.
We explore because it is in our nature; as a species, we simply cannot imagine not exploring, not traveling.
Copyright 2017 - Distributed by THE CALIFORNIA NETWORK
Pope Francis Prayer Intentions for OCTOBER 2017
Workers and the Unemployed. That all workers may receive respect and protection of their rights, and that the unemployed may receive the opportunity to contribute to the common good.
Scientists may have discovered a breakthrough in earthquake prediction. Researchers studying the 9.1 magnitude Tohoku quake in Japan from ... continue reading
Russian cosmonauts claim they have found alien life hitching a ride on the International Space Station (ISS). The Russian news agency, ... continue reading
A former Google engineer plans to start his own religion, and he is designing the god to lead it. Anthony Levandowski, a former Google ... continue reading
A young Russian man is sticking to his story that he first told as a child. Boriska Kipriyanovich, 20, claims he once lived on Mars and ... continue reading
Pope Francis' call to the International Space Station shows there is no conflict between the faith and science (Full Transcript) Watch
Pope Francis spoke with the crew of the International Space Station on Thursday. The Holy Father asked each of the crew how the experience ... continue reading
by Catholic Online
- Coming forward is the key to ending systemic abuse!
- Daily Readings for Tuesday, December 12, 2017
- Our Lady of Guadalupe: Saint of the Day for Tuesday, December 12, 2017
- Daily Reading for Wednesday, December 13th, 2017 HD Video
- Attempted terror attack fails in Manhattan as pipe bomb explodes ...
- Did Ray Moore break the law by talking to teens?
- Archaeologists open two new Egyptian tombs, discover mummy, artifacts
- Here's how Pope Francis wants to change the Lords Prayer HD
- Daily Reading for Tuesday, December 12th, 2017 HD
- Daily Reading for Monday, December 11th, 2017 HD
- Daily Reading for Sunday, December 10th, 2017 HD
Learn about Catholic world
Inform - Inspire - Ignite
Catholic Online Saints
Your saints explained
Catholic Online Prayers
Prayers for every need
Catholic Online Bible
Complete bible online
Catholic Online News
Your news Catholic eye
Today's bible reading
Products and services we offer
Catholic Online Shopping
Catholic medals, gifts & books
The California Network
Inspiring streaming service
Learn the Catholic way