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3 Changing the premise of the question while maintaining the substance of the questions.
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Does Bennu pose a risk to Earth? (AndAnd how can OSIRIS-RExREx's mission save us?)

OSIRIS-REx has launched and is on its way to 101955 Bennu to divert it away from Earth - it's basically Armageddon in real life... 

Armageddon in real life

"determine Bennu's physical and chemical properties, which will be critical to know in the event of an impact mitigation mission".

This is from Osiris-Rex's Wikipedia page:

...asteroid Bennu is a threatening Earth impactor capable of causing vast destruction and death

It isn't billed as the primary mission objective (probably to prevent panic), but among the objectives is diverting Bennu away from an impending impact with Earth - perhaps a "Deep Impact".

  1. What is the chance that Bennu will impact Earth?

  2. What is the potential for damage if it does hit?

  3. How will information from Osiris-Rex divert Bennuaffect an impact mitigation mission?


Bonus question: When will Bennu (potentially) impact with Earth?

Does Bennu pose a risk to Earth? (And can OSIRIS-REx save us?)

OSIRIS-REx has launched and is on its way to 101955 Bennu to divert it away from Earth - it's basically Armageddon in real life.

Armageddon in real life

This is from Osiris-Rex's Wikipedia page:

...asteroid Bennu is a threatening Earth impactor capable of causing vast destruction and death

It isn't billed as the primary mission objective (probably to prevent panic), but among the objectives is diverting Bennu away from an impending impact with Earth - perhaps a "Deep Impact".

  1. What is the chance that Bennu will impact Earth?

  2. What is the potential for damage if it does hit?

  3. How will Osiris-Rex divert Bennu?


Bonus question: When will Bennu (potentially) impact with Earth?

Does Bennu pose a risk to Earth? And how can OSIRIS-REx's mission save us?

OSIRIS-REx has launched and is on its way to 101955 Bennu to... 

"determine Bennu's physical and chemical properties, which will be critical to know in the event of an impact mitigation mission".

This is from Osiris-Rex's Wikipedia page:

...asteroid Bennu is a threatening Earth impactor capable of causing vast destruction and death

  1. What is the chance that Bennu will impact Earth?

  2. What is the potential for damage if it does hit?

  3. How will information from Osiris-Rex affect an impact mitigation mission?


Bonus question: When will Bennu (potentially) impact with Earth?

2 adding quote
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OSIRIS-REx has launched and is on its way to 101955 Bennu to divert it away from Earth - it's basically Armageddon in real life.

Armageddon in real life

This is from Osiris-Rex's Wikipedia page:

...asteroid Bennu is a threatening Earth impactor capable of causing vast destruction and death

It isn't billed as the primary mission objective (probably to prevent panic), but among the objectives is diverting Bennu away from an impending impact with Earth - perhaps a "Deep Impact".

  1. What is the chance that Bennu will impact Earth?

  2. What is the potential for damage if it does hit?

  3. How will Osiris-Rex divert Bennu?


Bonus question: When will Bennu (potentially) impact with Earth?

OSIRIS-REx has launched and is on its way to 101955 Bennu to divert it away from Earth - it's basically Armageddon in real life.

Armageddon in real life

It isn't billed as the primary mission objective, but among the objectives is diverting Bennu away from an impending impact with Earth - perhaps a "Deep Impact".

  1. What is the chance that Bennu will impact Earth?

  2. What is the potential for damage if it does hit?

  3. How will Osiris-Rex divert Bennu?


Bonus question: When will Bennu (potentially) impact with Earth?

OSIRIS-REx has launched and is on its way to 101955 Bennu to divert it away from Earth - it's basically Armageddon in real life.

Armageddon in real life

This is from Osiris-Rex's Wikipedia page:

...asteroid Bennu is a threatening Earth impactor capable of causing vast destruction and death

It isn't billed as the primary mission objective (probably to prevent panic), but among the objectives is diverting Bennu away from an impending impact with Earth - perhaps a "Deep Impact".

  1. What is the chance that Bennu will impact Earth?

  2. What is the potential for damage if it does hit?

  3. How will Osiris-Rex divert Bennu?


Bonus question: When will Bennu (potentially) impact with Earth?

1
source | link

Does Bennu pose a risk to Earth? (And can OSIRIS-REx save us?)

OSIRIS-REx has launched and is on its way to 101955 Bennu to divert it away from Earth - it's basically Armageddon in real life.

Armageddon in real life

It isn't billed as the primary mission objective, but among the objectives is diverting Bennu away from an impending impact with Earth - perhaps a "Deep Impact".

  1. What is the chance that Bennu will impact Earth?

  2. What is the potential for damage if it does hit?

  3. How will Osiris-Rex divert Bennu?


Bonus question: When will Bennu (potentially) impact with Earth?