ሓደጋታት ኣብ ላዕሊ ዝተጠቕሱ ቋንቋታት ብተግባራት ተተርጓሚታት ክወጽኡ ይኽእሉ እዮም። ረድእቶ ንምፍጣር ኣንብብ ኣብ እንግሊዝኛ
  1. ተማሃር
ንዅሉ ዝደሊ ሒሳብ

መሓዝ

ግራቪታሽን፣ ሕጊ ኪፕለር፣ ኣርእስቲ ዑደት፣ ፍጥነት፣ ምውጻእ፣ ሮኬት ኤኩያሽንን ከመይ ገይሮም መርከብታት ኣብ መንጎ ዓለምታት ክጓዓዙ ከም ዘለዎም

NASA/JPL/Space Science Institute

  1. ናቱትነቭ

    • Newton's gravity · 12 ደቂቃ

      One law explains falling apples, the Moon's orbit and the path of every planet. Fire Newton's cannon and find out how.

  2. ሕጋዊ ኬፕለር

    • Kepler's laws · 14 ደቂቃ

      Three rules found from careful observations in the early 1600s still describe every orbit, from moons to exoplanets.

  3. ኣርእስቲ፦

    • Orbital elements · 14 ደቂቃ

      Six numbers pin down any orbit in space: its size, shape, tilt, orientation and where the body is on it.

  4. ፍጥነት ዞባ: ናይ vis-viva ፍልልይ

    • Orbital speed: the vis-viva equation · 12 ደቂቃ

      One short equation gives the speed of anything in orbit at any point, if you know how far it is and the size of its orbit.

  5. ርሒቕነት

    • Escape velocity · 12 ደቂቃ

      How fast do you need to go to leave a world for good? And why rockets do not actually need to reach it at the surface.

  6. ስለምንታይ ሓደ ዞባ ዝውረድ እዩ

    • Why an orbit is a fall · 10 ደቂቃ

      Astronauts float not because there is no gravity up there, but because they are falling all the time, and missing.

  7. ዞባ ምውሳድ:

    • Reaching orbit · 12 ደቂቃ

      Why rockets go up for only a few seconds, then spend ten minutes going sideways: the gravity turn, staging and orbital insertion.

  8. ርኬታ ኢኩዋሽንን delta-v

    • The rocket equation and delta-v · 12 ደቂቃ

      Why rockets are mostly fuel, why they come in stages, and the one equation behind every mission's budget.

  9. ሒሳብ

    • Hohmann transfers: changing orbits · 12 ደቂቃ

      To go higher you speed up, and then you arrive slower. The two-burn manoeuvre that moves satellites from low orbit to geostationary orbit.

  10. መጀመርታ መስኮታት

    • Launch windows: the road to Mars · 12 ደቂቃ

      You cannot aim at Mars, only at where Mars will be in eight months. Why Mars missions leave every 26 months, all at once.

  11. ናጽነት

    • Orbital insertion: getting captured · 12 ደቂቃ

      Arriving at a planet is the most dangerous minute of a mission: one burn decides whether you stay or fly past forever.

  12. ግራቪቲ

    • Gravity assists: the free slingshot · 12 ደቂቃ

      How Voyager, Cassini and New Horizons stole speed from planets, and why it never breaks the conservation of energy.

  13. ነጥብታት

    • Lagrange points: balance in the sky · 11 ደቂቃ

      Five places around every pair of worlds where a spacecraft can ride along for free, and why the James Webb Space Telescope lives at one of them.

  14. ረድኤት

    • Rendezvous: catching the space station · 11 ደቂቃ

      To catch something ahead of you in orbit, you drop lower and go slower-looking but faster. The counter-intuitive art of meeting in space.

  15. ናብ ቤትካ ምኻድ: ምጽናሕ

    • Coming home: reentry · 11 ደቂቃ

      A small push slows a spacecraft by a hundred metres per second, and the air takes care of the other 7.8 kilometres per second, as a fireball.

  16. ረድኤት

    ኣብ ዝለዓለ ደረጃ

  17. ኣስተራይዶታትን ኮሜታታትን

    ኣብ ዝለዓለ ደረጃ

መዳያትን ትምህርታትን ዝጥቀመሉ ሞዴላት ንኸተማሃር ጥራይ እዮም ዚጥቀሙ። ንዘለኣለም ኣይትጥቀሙን እዮም። ናይ ምውሳድ፣ ናይ ዕላማታት ኣኼባ ወይ ካልእ ውሳኔታት ንምውሳድ ኣይትጥቀሙን። ሰርቲፊኬትታት ነጻ እዮም ከምኡውን ዘይተቐበልዎ’ዮም። ኣንብብ ናይ ርክብ መግለጺ