1.   The powerful explosion was heard from Portland, Maine to Albany, New York.

2.   Two apartment blocks collapsed shortly after midnight when a powerful explosion ripped through the crowded Bowbazaar district of central Calcutta, police said.

3.   An hour later, ripples of powerful explosions resounded far off in the distance.

4.   Astronomers suspect that these intense bursts come from the most powerful explosions known since the Big Bang, the theorized explosion at the creation of the universe.

5.   A powerful explosion at a northwest Harris County metal forging plant killed eight workers and injured two others, authorities said Monday.

6.   But Pentagon officials are pressing the White House to revise its negotiating position to permit more powerful explosions.

7.   But senior U.S. defense and intelligence officials said the Kursk had suffered powerful internal explosions.

8.   Early Saturday in Kabul, the Afghan capital, residents reported hearing at least eight powerful explosions, signaling the resumption of US airstrikes.

9.   Eyewitnesses told Navy officials that two unidentified men stood at attention as the small rubber boat they were piloting rammed the Cole and a powerful explosion ensued.

10.   Gamma-ray bursts are thought to be the most powerful explosions in the Universe, releasing as much energy as a supernova in seconds.