Why might galileo write a letter defending himself at this time?

What happened to hudsons voyage east across the top of russia ?

How much did inflation increase during president carter’s term?

What important discovery was made by edmond halley and alexis clairaut, using newton's ideas of mathematics and gravity? they created the scientific method to outline how science should be conducted. they were able to find the orbit of a comet and predict the year of its return. they discovered the three newest planets--uranus, neptune, and pluto. they explained why objects appear to have color.