Resources for everyone

Torino Impact Hazard Scale 

Expert Q&A


1908 Siberia


How an Asteroid Impact causes Extinction

UK perspective

Impacts and Extintions

Asteroid Warnings Toned Down


Roles and Resources

Association of Space Explorers NEO Chair

Home on the Web

NY Times

Prepare a brief statement about what we're doing to protect ourselves from the threat of impact.

  • What percentage of “near Earth objects” have been identified?
  • When might this research be complete and at what cost?
  • What obstacles are there in developing and implementing a plan to avert disaster?

Astrophysicist (NASA)

Impact Effects 


Prepare a brief statement about what happens when an impact takes place.

  • When was the last time an asteroid collided with Earth?
  • What impact did that collision have on life on Earth?
  • What range of dangers might the Earth face as a result of a collision?


Congressional Oversight Official

Congressional Hearings on NEO Survey Programs 

NY Times

Prepare a brief statement about the current state of NEO survey programs.

  • What would complying with Congress’ 2005 NASA authorization bill entail?
  • What is "Spaceguard"? Is it enough?
  • How is communication between NASA and Congress? How might it be improved?
Homeland Security Officer

Journal of Homeland Security

Government Secrecy

Prepare a brief statement about the risk and allocation of Homeland Security resources.

  • Who should be responsible for planetary defense?
  • Should government plans be made public?
  • Should a potenital large impact be made public?


Be prepared to ask questions of all others.

Some FAQ

more FAQ