It is hard to comprehend the enormity of our Universe. Our Sun is only one of billions of stars in our galaxy, known as the Milky Way. But beyond the Milky Way, there are billions of other galaxies too. Collectively, all these galaxies, along with the vast amount of space found in between them, make up the Universe.
- How big is our solar system?
- How big is our galaxy and if you reach the edge of our galaxy, what would you see?
- How many galaxies are there?
These are fundamental questions which have long interested humankind. In the more than 70 years since the discovery that the Universe is expanding, we have made some significant steps in understanding how the Universe began and how it must have evolved to be what it is today. We know that galaxies and clusters of galaxies formed from tiny fluctuations in the early Universe. We can measure these fluctuations by mapping the cosmic background radiation and relate them to the structures which we observe today. However, many challenges remain such as:
- Finding the age of the Universe
- Discovering the rate at which the Universe is expanding
Since the discovery of Io, Europa, Callisto and Ganymede (four moons of Jupiter) by Galileo in January 1610, many theories developed regarding distant planets and their movements but it wasn't until 1922 when a man by the name of Edwin Hubble made the startling discovery that shook the scientific world. Up to this time it was agreed that the entire Universe was made up of the Milky Way but while looking through his 100" telescope at Mt. Wilson, hubble observed several spiral nebulae, including the Andromeda Nebula, and came to the conclusion that these nebulae were too distant to be part of the Milky Way, thus coming to the conclusion that these were contained within galaxies of their own. It is now known that our galaxy is only one of billions of galaxies that make up the Universe. Using the links on this site you can navigate through Space and Time and discover planets, stars, nebulae, galaxies and much much more.
If you should get lost while exploring this website just visit the site map and you will be back on track!
You can also contact me by completing the contact form.
some interesting facts about the universe:
- A day on venus is longer than an Earth year.
- Approximately 275 million stars are born every day.
- Each year the moon moves 3.8 cm further from the Earth.
- Earth has over 8,000 pieces of space junk orbiting around it.
- Earth’s rotation is slowing at a rate of about 17 milliseconds a century.
- Saturn is less dense than water so if you could put the planet in a bath tub....it would float!
- The sun makes up 99% of the mass of the solar system.
- It takes a photon, on average, 170,000 years to travel from the core of the sun to the surface.
- Then it takes just 8 minutes from the suns surface to your eyes.
- The Voyager 1 spacecraft is the most distant human-made object from Earth.
Space Missions...past and present.
Over the decades NASA and other international Space Agencies have sent hundreds of missions into outer space. Follow this link to learn about the discoveries and research that help us understand our origins. Also learn about the missions that did not go according to plan.
Don't forget...if you get lost at any stage of your journey through the cosmos just click on the site map link in the menu at the top of the page.Click here for missions page
Planets....our solar system and beyond.
Our galaxy contains over 200 bilion stars. Astronomers are discovering new planets every day orbiting suns and the race is on to find life outside of our earth.
Follow this link and learn about the planets of our solar system and also learn about new planets and the possibility of them harbouring life.Click here for Planets page
What's in the news today?
Every day NASA and other international space agencies make wonderful discoveries through research both here on earth and by collecting data and images from the Hubble Telescope along with data collected by rovers which are currently roaming distant worlds.
Follow this link and learn about NASA activity on other planets and see amazing images captured by the Hubble Telescope.
Scientists and space pioneers
Ever since man started gazing at the stars questions such as:
- What is out there?
- Are we alone?
- How did we get here?
have been asked. Thanks to the advancement of technology over the centuries these questions have somewhat been answered
Follow this link and discover the scientific equipement used by astronomers past and present.Click here for list of scientists
The universe is massive and there is a good chance that you will get lost along the way!
Here you will find links to every page on this website so yopur journey will be that little bit easier.
Please enjoy your visit and don't forget that you can contact me at any time by just filling out the contact form.Site Map
Proxima b Discovered August 2016
In August 2016, astronomers announced that a potentially Earth-like planet orbits Proxima Centauri, the closest star to the sun. Click here for more