TF

COSMIC JOURNEY

  • Earth and Our Cosmic Position

    • Earth is a small, fragile planet in the vast expanse of space.
    • Our journey into understanding the universe begins by looking beyond Earth's surroundings.

  • The Moon

    • Distance: Approximately 384,000 km from Earth.
    • Driving to the Moon at 100 km/h would take over 160 days.
    • From the Moon, Earth is seen as a fragile sphere against the darkness of space.

  • The Sun

    • Distance: 1 astronomical unit (AU) or about 150 million km from Earth.
    • Light from the Sun takes about 8 minutes and 20 seconds to reach Earth.
    • Traveling by commercial jet (900 km/h) to the Sun would take about 19 years.
    • The Sun is crucial for providing energy to sustain life on Earth.

  • Mars

    • Closest approach to Earth: About 54.6 million km.
    • Farthest distance: Up to 401 million km.
    • Traveling to Mars at a commercial jet's speed would take upwards of 50 years.
    • Space exploration to Mars faces significant challenges due to varying distances and orbital dynamics.

  • Neptune

    • Distance: Roughly 4.5 billion km from Earth.
    • Sunlight takes about 4 hours and 15 minutes to reach Neptune from the Sun.
    • Voyager 1 (launched in 1977) is now over 22 billion kilometers from Earth and continuously exploring beyond traditional boundaries.
    • The iconic