4 ms·

~11 km/s to escape the sun, ~30 km/s to fall into it. Escaping is easier.

• sandworm101 7y ago
  Just getting into the sun isnt enough. The sun's outer layers are not very dense. A blob of uranium might survive long enough to come out the other side, at least on the initial few orbits.
  • theelous3 7y ago
    I don't think we have to be very precise. It doesn't really matter if a blob of uranium orbits the sun for a few thousand years.
    • skykooler 7y ago
      In that case, why get it into the sun at all? Just put it into an orbit that doesn't intersect Earth.