Main
Page
-
Marcus Martins / Minas Gerais / São Paulo / BRASIL
-
Portuguese
Astronomy is now one of our favorite activities!
Satellites - space junk in real time - Click here
ISS
- PLANET EARTH LIVE - four cameras in real time - Click here
|
|
MONITORING ASTEROIDS LAND NEXT
Click
on the image below to see the table of temperatures in the world :
Photo: last global assembly
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
 |
|
Meteorscatter - More Miles On VHF
=> Notes
eclipses SUN and MOON - (for teachers and students)
<=
Facts about Astronomy
Every
hour, the universe expands 1.6 billion kilometers ( one billion kilometers
in each direction).
There
are some scientists claiming that part of the interference on your TV should
be the waves of the Big Bang when the universe was generated.
Planets,
constellations and galaxies make up only 4% of the universe. The rest is
made of dark matter, a mysterious kind of matter about which scientists know
very little.
Our
galaxy, called
Via Láctea, has about 200 billion star, though some
astronomers believe that they are much more than that.
The nearest Via Lactea galaxy is Andromeda, also called M31, located two
million light years away.
The Via Lactea and the Andromeda Galaxy are part of the same galactic
cluster , the Local Group, with 30 members. According to astronomers, the
Via Lactea and Andromeda in the future will be met only forming a galaxy.
Remember that travel through space toward the Virgo Cluster, formed by
hundreds of other galaxies.
The best known constellations in Brazil are the Southern Cross and Orion.
The constellation of Orion is partly formed by three aligned stars called
The Three Marias. For the ancient Greeks, they represented the Orion's belt.
Light from the sun takes about eight minutes to reach Earth. It may seem strange, but the light of many stars take thousands of years to get here. If a star that is 15 million years light blow that time, the event will only be seen from Earth in 15 million years.
The earth spins at 1,600 km / h, but travels in its orbit around the sun to
more than 107,000 km / h.
The weight of the Earth is 5,980,000,000,000,000,000,000 tons.
The Moon moves away from Earth at a speed 1-3 centimeters per year. In every
century departs three meters.
The Sun is 330,000 times greater than Earth. By the way, did you know that
the sun has 99.9 % of all matter in our solar system ?
Jupiter is twice larger than all the other planets, satellites, asteroids
and comets in the solar system together.
The planet of the solar system with the most moons of Jupiter is it has 63
moons. The second is with Saturn, with 34 moons.
There are five dwarf planets in our solar system: Ceres, Pluto, Haumea,
Makemake and Eris. Some scientists, however, suspect that number is much
higher.
The temperature of the moon can reach 100 ° C during the lunar day and -175º
C at night.
The brightest star of the Via Lactea is Eta Carinae, sending five million
times more energy than the sun.
Already the most brilliant discovery by humans star is the SN1987A
supernova, galaxy Large Magellanic Cloud. Its brightness is greater than its
own galaxy.
The constellation of the Southern Cross is made up of 54 stars; however,
only five are visible to the naked eye.
There are several stars of identification systems. The most commonly used
are the Messier system (M) and the New General Catalogue of Nebulae and
Clusters of Stars (NGC). Many galaxies are identified by the two systems. An
example is Andromeda, which is identified as M 31 and NGC 224.
Galaxies are systems formed by dust, gas and stars held together by their
own gravity. There are several types of galaxies: spiral (like the Via
Lactea), elliptical, and irregular barred.
B
lack holes are massive stars that collapsed. Their gravity is so intense that affects the space around and attracts light itself.
Quasars
(quasar is short for "quasi-stellar") are giant black holes at the centers
of galaxies. They are strong and light emitting radio waves. This type of
celestial body turns very fast. Astronomers believe are some of the oldest
and most distant objects in the Universe.
The largest known volcano is located on Mars, Olympus Mons, three times
higher than our Mount Everest;
The dwarf stars are so dense that a given made of this material would
weigh as much as a car;
Every year, fall about 150 tons of meteorites and fragments on Earth. This
is an average of 410kg per day;
The stars do not twinkle. What we see is the interference of Earth's
atmosphere in the light that comes to us;
The impact of the Apollo 12 lunar landing made of the lunar surface
vibrate for 55 minutes;
The first foot to land on the moon (Neil Armstrong) wore the number 41;
.gif)
