Black holes emit x-ray radiation and get smaller and smaller until they disappear, or “evaporate”.
* Most black holes are formed from the death of large stars (larger than the sun) that run out of fuel and cannot sustain its nuclear reaction. The star loses the force pushing itself outward and is overcome by the force [...]
Rock and ice are the main ingredients of asteroids, comets and meteors. These flying rocks orbit the sun and sometimes come close enough to Earth to see. The Asteroid Gaspra.
Asteroids are made of rocky and/or iron-nickel material and most are found in an orbit between Mars and Jupiter. Most are pitted with impact craters and [...]
Blue Neptune is one of the solar system’s gas giants. Unlike Earth, gas giants are mostly hydrogen, helium, and methane gases. The methane gas on Neptune gives the planet its blue color because the gas absorbs red light and reflects the blue back into space. Although not seen in the image the planet has a [...]
All satellites today get into orbit by riding on a rocket or by riding in the cargo bay of the Space Shuttle. Several countries and businesses have rocket launch capabilities, and satellites as large as several tons make it safely into orbit on a regular basis. For most satellite launches, the scheduled launch rocket is [...]
Asteroids are small, rocky bodies that orbit the sun in between the orbits of Mars and Jupiter, which is anywhere from 2.1 AU (1.95×108 mi / 3.15×108 km) to 3.2 AU (3.0×108 mi / 4.8×108 km) from the sun. There are more than 20,000 known asteroids. They are irregularly shaped and vary in size [...]
A Cicada passes eggs through its ovipositor.
Cats are feline, dogs are canine, and sheep are ovine.
A pigs snout is called a gruntle.
When they mate, a yak and a cow produce a dzo.
A cat’s whiskers are called vibrissae.
Goats produce cashmere.
The common term for a member of the bee genus ‘Bombus’ is the bumblebee
A ‘bitch’ is more [...]
Uranus is visible to the naked eye.
Benjamin Franklin was first to suggest daylight saving.
The most abundant metal in the Earths crust is aluminium.
It snowed in the Sahara desert on 18 February 1979.
On average, an iceberg weighs 20 million tons.
The far side of the moon was first photographed by a Russian satellite in 1959.
Captain Cook [...]
The Earth is the only planet that living things lives that we discover so far…
The Earth is the only planet with oxygen and water supply that we discover so far…
Well, how long is our Earth’s equatorial?
It’s 4,007,501,668.56 Centimeters,
40,075,016.69 Meters,
1,577,756,562.42 Inches,
131,479,713.54 Feet,
43,826,571.18 Yards,
24,901.46 Miles,
21,638.75 Nautical Miles,
23,548,605.41 Smoots.
The time of a day is 23 [...]
Global warming, or climate change, is a subject that shows no sign of cooling down. Here’s the lowdown on why it’s happening, what’s causing it, and how it might change the planet.
Is It Happening?
Yes. Earth is already showing many signs of worldwide climate change.
• Average temperatures have climbed 1.4 degrees [...]
There are 230 joints in the human body.
The average human head weighs about eight pounds.
The kidneys filter over 400 gallons of blood each day.
J. Edgar Hoover wouldn’t let his drivers make left turns.
Penguins have an organ above their eyes that converts salt water to fresh water.
The metal band that connects the pencil eraser to the [...]
