Latest John P. Millis Stories
This article is the latest installment in a new series where redOrbit's in-house experts will answer questions submitted by you, the reader. This week's question: "Why does earth rotate?" Our resident expert explains.
Located about 440 light-years from Earth is a strange object that has properties of both a star and a planet.
Astronomers search for planets using several different techniques; the most popular of which is to measure how a star "wobbles." As the surrounding planets orbit the star, their gravitational fields will cause the star to shift back and forth in response.
However, in 2004 scientists unexpectedly found an ancient iron radioisotope in the Earth’s crust along the ocean’s floor. Geological dating indicates that the iron had been embedded for about 2.2 million years.
In today's Your Universe Today Podcast, Harvard-Smithsonian astrophysicist Dr. Matthew Walker explores the question: "What is Dark Matter?"
In 1998 scientists measuring the expansion of the Universe made a startling discovery: the Universe is accelerating. Previously, researchers believed that the expansion of the Universe would eventually slow under the influence of gravity.
The Woodward effect is one of many effects that can be derived from the framework of general relativity. The mathematics can be somewhat opaque and so it can be difficult to determine if the resulting effect is a physical, or purely mathematical construct.
- A trick or prank.