I had the pleasure of visiting the 5th grade students of William Burnett Elementary School in Milpitas, California. We talked about science, technology, engineering and math and learned about the Sun, Space Weather and the International Space Station. From far away, Astronaut Reid Wiseman was sending his regards to all the students.
30. Tyler: “How hot is the Sun?”
Center: 27 million degrees Fahrenheit
Photosphere: 10,000 degrees Fahrenheit
Chromosphere: 36,000 degrees Fahrenheit
Corona: 1.8 million degrees Fahrenheit
31. Jarvis: “What happens to things when they get sucked into black holes?”
A black hole with all the mass
of Earth would be about the
size of a fingernail!
This image of the International Space Station and the docked space shuttle Endeavour, flying at an altitude of approximately 220 miles, was taken by Expedition 27 crew member Paolo Nespoli from the Soyuz TMA-20 following its undocking on May 23, 2011 (USA time). The pictures are the first taken of a shuttle docked to the International Space Station from the perspective of a Russian Soyuz spacecraft. Onboard the Soyuz were Russian cosmonaut and Expedition 27 commander Dmitry Kondratyev; Nespoli, a European Space Agency astronaut; and NASA astronaut Cady Coleman. Coleman and Nespoli were both flight engineers. The three landed in Kazakhstan later that day, completing 159 days in space.
http://solc.gsfc.nasa.gov/kids3/kids3.html
149,597,870,700 metres or 92,955,807.273 mi
Approx 5 billion years old
hydrogen (74%) and helium (about 24%). Astronomers consider anything heavier than helium to be a metal. The remaining amount of the Sun is made of iron, nickel, oxygen, silicon, sulfur, magnesium, carbon, neon, calcium and chromium. In fact, the Sun is 1% oxygen; and everything else comes out of that last 1%.
Stellar-mass black hole; more than 10x our Sun Supermassive black hole; more than 1-100 million x our Sun
speed of sound, about 330 m/s or 760 mph speed of light, about 299,792,458 m/s or 186,282 mps Sun to Earth 8.3 min Nearest Star to Sun 4.2 years Nearest galaxy to Earth 25,000 years Across the Milky Way 100,000 years