# Fending against asteriod assembled using only Lego® bricks [closed]

One fine day a Norse god, Loki assembled an asteriod resembled Chicxulub impactor using numerous Lego® bricks(the same one we have on Earth) in Jupiter's orbit. He wanted to duplicate the event that triggered the extinction of the dinosaurs so he hurl the Lego asteriod towards Earth at approximately 20Km/s and do not worry I am not asking how many bricks is needed to assemble such an asteroid. Using the same parameters as the Chicxulub impactor except it is assembled with plastic Lego® bricks instead, how can we prevent a catastrophic calamity?

P.S Loki maybe mean but he will not try to intervene with our defenses and we have been keeping a close watch at Loki while he is busy playing with the Lego® bricks. Also please do not tell me this asteriod will disintegrate enroute to Earth, in that case kindly provide guidance to Loki so that he can become master builder in exchange for your own safety. (Loki will applaud answer that contains mathematic and advise whether does he really need superglue not to be mistaken with "Kragle".)

Parameters

• Size: 12000m (diameter)
• Velocity: 20000m/s
• Location of impact: Chicxulub
• Impact angle: 90°

Comment below if you have doubt.

• Same as the other asteroid questions, but the huge size is offset by the low density. So more like the mass of a typical asteroid. You don't need us to calculate the mass for you. Aug 19 '15 at 6:07
• For the masper builder subquestion: LEGO(R) bricks are made from ABS plastic, which is soluble in acetone. If he used a bit of acetone vapor while assempling his asteroid, the bricks would fuse together. That should prevent your LEGO(R) Asteroid from breaking apart en route. It woudl eb a shame, too, but i doubt Loki had intended to re-use them anyway. Aug 19 '15 at 7:02
• @Burki noted and I sincerely doubt Loki would need another attempt. Aug 19 '15 at 7:13
• I don't understand the question. Why do you insist that the asteroid be made of Lego bricks when you pre-define the important parameters, which are not at all consistent with Lego bricks? Aug 19 '15 at 7:58
• @Hackworth oops my mistake I got carried away while running through some figures I've edited the question. Aug 19 '15 at 8:05