• Content Count

  • Joined

  • Last visited

Community Reputation

101 Excellent

About KG3

  • Rank
    Spacecraft Engineer

Recent Profile Visitors

828 profile views
  1. I believe I've read an article about this somewhere recently. Yes there could but to keep the water from boiling away at the surface (I'm assuming you meant liquid water) the planet would need to be massive enough that the water at the core would be compressed into a form of ice.
  2. Ok, sorry. Pyrotechnic fasteners.
  3. Explosive Bolts, I saw recently that the Saturn rockets used retractable hold downs to keep the rocket on the launch pad while the engines powered up but the Space Shuttle used explosive bolts. What are explosive bolts? I've heard of them before but don't know anything about them. I imagine a technician with a torque wrench very carefully tightening a nut, hoping he doesn't loose any fingers! Are they anything like the bolts I might see at a hardware store?
  4. KG3

    Random Science Facts Thread!

    It looks good! Does it come with coffee cup holders?
  5. KG3

    New Horizons

    How does that effect missions? Or does it mostly just effect things like press releases?
  6. Those old Gyro-Jet bullets were awesome! The only problem they really had was that if the target you were aiming at was close enough to hit (2-3 meters tops) the bullet would be going so slow that it would just bounce off. At the distances it took for the bullet to reach lethal velocity it would be traveling in a very random direction!
  7. Well, I guess there is a reason they don't use recoilless riffles so much these days.
  8. How about a recoilless riffle? You can fire a relatively large gun from just a jeep, just don't be standing behind it when it goes off!
  9. Interesting. Each asteroid has a history though. Depending on how far from the sun it formed, or if it was part of a larger body, or if it collided with other stuff, etc... I wonder if we might ever find a rock sitting on the surface of an asteroid that was blasted off the surface of the Earth from early in our history.
  10. KG3

    New Horizons

    Oh, that's graupel. I have seen it before but never knew there was a word for it. I don't recall ever seeing it as large as shown in your first picture of it!
  11. KG3

    New Horizons

    Are we likely to find that objects that formed in this part of the solar system are more likely to be spherical regardless of size unlike objects that formed closer to the sun like Bennu? Graupel, are those the same a hail stones?
  12. KG3

    New Horizons

    It's amazing how well this object fits the prediction made from the occultation data! Still, it doesn't look like the snow men we typically see where I live in North America. Our snow men here tend to have three body parts, head, thorax and abdomen... more like an insect. Ultima Thule seems to have a body plan more like a spider, cephalothorax and abdomen. Just without all the legs and stuff.
  13. It's allot harder for the wheels to turn the engine in low gear. I usually park my car in first gear without using the parking break unless it's on a steep hill. It does help if the vehicle has good compression. If you try parking your car in 4rth gear without the parking break on a hill the car will very easily roll away. If you try pop starting your car (without using the starter) by getting the car rolling then taking your foot off the clutch you need to do it in 1st or 2nd gear. 3rd or 4rth gear most likely won't turn the engine over fast enough to start it.
  14. Continuously created mass was part of the "static universe theory" wasn't it? This new theory would be similar to that?