What is the largest object to hit Earth?
Chelyabinsk meteor
The Chelyabinsk meteor was estimated to have caused over $30 million in damage. It is the largest recorded object to have encountered the Earth since the 1908 Tunguska event. The meteor is estimated to have an initial diameter of 17–20 metres and a mass of roughly 10,000 tonnes.
What would happen if a 1 km asteroid hit Earth?
The largest near-Earth asteroids (> 1 km diameter) have the potential to cause geologic and climate effects on a global scale, disrupting human civilization, and perhaps even resulting in extinction of the species.
What exploded over Russia?
The Chelyabinsk meteor was a small asteroid — about the size of a six-story building — that broke up over the city of Chelyabinsk, Russia, on Feb. 15, 2013. The blast was stronger than a nuclear explosion, triggering detections from monitoring stations as far away as Antarctica.
How tall is the Freedom Tower in New York?
We eventually emerge on the future Fulton Street, directly below the 1,776-foot tall One World Trade Center, nicknamed the Freedom Tower. The imposing 185-foot base of the tower is made of concrete for security reasons.
What is the Freedom Tower made out of?
We eventually emerge on the future Fulton Street, directly below the 1,776-foot tall One World Trade Center, nicknamed the Freedom Tower. The imposing 185-foot base of the tower is made of concrete for security reasons. Looking up from directly below, the tower’s tapering glass facade above gives the illusion that it goes on forever.
What is the ISBN number for the Freedom Tower?
New York: Little, Brown and Company. ISBN 978-0-316-33631-4. OCLC 871319123. ^ “Freedom Tower’s Evolution”. The New York Times. January 3, 2006. Retrieved January 14, 2012. ^ “America’s Freedom Tower?”. NBC News. February 17, 2005. Retrieved November 22, 2011.
When was the Freedom Tower opened to the public?
However, screening did not fully end until the official dedication and opening of the museum on May 21, 2014, after which visitors were allowed to use the plaza without needing passes. In March 2014, the tower was scaled by 16-year-old Weehawken, New Jersey resident Justin Casquejo, who entered the site through a hole in a fence.