The presence of an ocean leaves open the possibility that it could host life. Another nearby moon, Europa, is also considered ...

Callisto, the third largest moon in the entire solar system, orbits Jupiter from about 1.2 million miles away. The rocky ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

Mathematical equations have been the greatest tool to explain the world around us and the key to advance our knowledge about ...

Today in History for Feb. 15: ...

Musician Megan Thee Stallion turns 30 and actor Natalie Morales turns 40, among the famous birthdays for Feb. 15.

Galileo is charged with heresy by the Roman Catholic Church for claiming the Earth revolved around the Sun. Listen to The John ...

1775: Angelo Braschi is chosen as Pope Pius VI. 1804: New Jersey becomes the last northern state to abolish slavery. 1852: Great Ormond St Hospital for Sick Children in London admits its first patient ...

Here’s a look at the life of renowned theoretical physicist, cosmologist, astronomer and mathematician, Stephen Hawking.

In 1610, astronomer Galileo Galilei used the newly invented telescope to show that the Milky Way was composed of a huge number of faint stars. For the next 300 years, astronomers assumed that the ...

How did the great modern scientific adventure related to the discovery and study of celestial bodies and the cosmos begin?

Galileo precedes today’s physicists by many generations, but his work underscores the interplay of intellect and observation ...