Your space for space
Episode 1- Introduction to Curious Universe
Here is The Eagle Nebula. 7000 light years from earth. (Approx 300,000 kms/sec for 7000 years.) Taken from the Hubble Telescope. I think it looks more like a Pterodactyl. If you zoom in to the head of the image, you will see The Pillars of Creation.
Below is the Zoomed-in picture of The Pillars of Creation. This Nebula cloud is very far from Earth. The width of one of the pillars is Approx 1 light year across, and Approx 4 light years in Length.
The Hubble Telescope
NASA’s Hubble Space Telescope was launched April 24, 1990, on the space shuttle Discovery from Kennedy Space Center in Florida.
- Hubble has made more than 1.2 million observations since its mission began in 1990.
- Astronomers using Hubble data have published more than 12,800 scientific papers, making it one of the most productive scientific instruments ever built.
- Hubble does not travel to stars, planets or galaxies. It takes pictures of them as it whirls around Earth at about 17,000 mph.
- Hubble has traveled more than 3 billion miles along a circular low Earth orbit currently about 340 miles in altitude.
- Hubble has no thrusters. To change pointing angles, it uses Newton’s third law by spinning its wheels in the opposite direction. It turns at about the speed of a minute hand on a clock, taking 15 minutes to turn 90 degrees.
- Hubble has the pointing accuracy of .007 arc seconds, which is like being able to shine a laser beam on a dime 200 miles away.
- Outside the haze of our atmosphere, Hubble can see astronomical objects with an angular size of 0.05 arc seconds, which is like seeing a pair of fireflies in Tokyo from your home in Maryland.
- Hubble has peered back into the very distant past, to locations more than 13.4 billion light years from Earth.
- The Hubble archive contains more than 100 Terabytes, and Hubble science data processing generates about 10 Terabytes of new archive data per year.
- Hubble weighed about 24,000 pounds at launch and currently weighs about 27,000 pounds following the final servicing mission in 2009 – on the order of two full-grown African elephants.
- Hubble’s primary mirror is 2.4 meters (7 feet, 10.5 inches) across.
- Hubble is 13.3 meters (43.5 feet) long — the length of a large school bus.
*The Eagle Nebula Info from http://hubblesite.org
**Hubble telescope Info from http://www.nasa.gov/
Episode 2. -Where are we in the universe?
In this image, branches (or “cosmic web”) of galaxies being held together by dark matter called filaments. Every speck of light is a galaxy that may have over 200 trillion stars. this image is everything and anything in the universe.
In this Second image below is the Laniakea Super Cluster. (in yellow) It houses over 100,000 galaxies and stretches out to approx 520 million light years across. Also in this image, is the Local Group and our Milky Way hidden in this vast web of clustered galaxies.
In this third image is our Local Group. It consists of 54 closest galaxies from our Milky Way galaxy. (hence why we call it the “Local” Group.) Most of them are Dwarf galaxies, and this area is 10 million light years in length.
In this fourth image below is our Milky Way galaxy. 100,000 light years across with over 200 Billion stars. Our Solar System sits comfortably on the Orion spur or “Local Arm.”
In this fifth image is our Solar System and it’s edge. Here lies the Kuiper Belt, Heliosphere, Oort Cloud and also the Interstellar medium. Once any object is into Interstellar space, the sun will have no more influence and that object would no longer be in or apart of our Solar System.
Finally, in this last image is The Big Bang. To get an understanding that we are in and part of a 13.7 Billion year old explosion. The universe is still expanding, and will still expand for approx another 13 billion years before the Universe will end. There are 3 Theories on how the Universe will end..”The Big Rip” “The Big Freeze” or “The Big Crunch” – You will have to wait for my episode “The end of the Universe as we know it” to hear more about it. That will be a fun topic to talk about.
Episode 3. -Our Solar System
- Mercury is the smallest and closest to the Sun of the eight planets in the Solar System, with an orbital period of about 88 Earth days
2) Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. It has no natural satellite. It is named after the Roman goddess of love and beauty
3) Earth, also called the world, is the third planet from the Sun, the densest planet in the Solar System, the largest of the Solar System’s four terrestrial planets, and the only astronomical object known to accommodate life.
4) Mars is the fourth planet from the Sun and the second smallest planet in the Solar System, after Mercury.
5) Jupiter is the fifth planet from the Sun and the largest planet in the Solar System. It is a giant planet with a mass one-thousandth that of the Sun, but is two and a half times that of all the other planets in the Solar System combined
6) Saturn is the sixth planet from the Sun and the second largest in the Solar System, after Jupiter. It is a gas giant with an average radius about nine times that of Earth
7) Uranus is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System.
8) Neptune is the eighth and farthest planet from the Sun in the Solar System. It is the fourth-largest planet by diameter and the third-largest by mass. Among the giant planets in the Solar System, Neptune is the most dense.
Episode 4- The Moons In Our Solar System
- Earth’s Moon.
The Moon is Earth’s only natural satellite. It is one of the largest natural satellites in the Solar System, and, among planetary satellites, the largest relative to the size of the planet it orbits
2. Mars’s Moons. These are examples of what are called minor satellites: small chunks of rock in orbit around planets as compared with large satellites like the Earth’s Moon. As the adjacent images show, they are very irregular in shape.
3. Jupiter’s moons (The Galilean moons) are the four largest moons of Jupiter—Io, Europa, Ganymede, and Callisto. They were discovered by Galileo Galilei around January 1610 and were the first group of objects found to orbit another planet.
4. Saturn’s moon Enceladus is mostly covered by fresh, clean ice and the surface temperature at noon only reaches −198 °C. Enceladus has a wide range of surface features ranging from old, heavily cratered regions to young, tectonically deformed terrains that formed as recently as 100 million years ago, despite its small size.
4b. Titan is the largest moon of Saturn. It is the only natural satellite known to have a dense atmosphere,and the only object other than Earth where clear evidence of stable bodies of surface liquid has been found
4c. Rhea is an icy body with a density of about 1.236 g/cm3. This low density indicates that it is made of 25% rock and 75% water ice. Although Rhea is the ninth-largest moon, it is only the tenth-most-massive moon.
5. Uranus and its six largest moons compared at their proper relative sizes and relative positions. From left to right: Puck, Miranda, Ariel, Umbriel, Titania, and Oberon.
6. Neptune’s moon Triton is the largest natural satellite of the planet Neptune. It is the only large moon in the Solar System with a retrograde orbit, an orbit in the opposite direction to its planet’s rotation. At 2,700 kilometres (1,700 mi) in diameter, it is the seventh-largest moon in the Solar System. Because of its retrograde orbit and composition similar to Pluto‘s, Triton is thought to have been a dwarf planet captured from the Kuiper belt. Triton has a surface of mostly frozen nitrogen, a mostly water-ice crust.