Airplane departing in sky
Engineering

Why Did the Boeing 737 MAX Crash?

January 11, 2023

Starting in late 2018, two Boeing 737 MAX airplanes crashed, killing 346 people total. The crashes occurred just months apart and the 737 MAX was grounded as a result. Why did both airliners crash? […]

Diagram showing the human pelvis
Biology

The Complex Structure of the Pelvis

January 11, 2023

The hip bone and the pelvis are considered to be extremely complex in their skeletal structure. The hip bones constitute of three major parts, each of which support multiple joints to enable physical mobility. […]

An image of two galaxies moving away.
Astronomy

The Expanding Universe: Are the Galaxies Moving Away?

January 6, 2023

The universe, when examined using the doppler shift, does seem to support the observation that it is expanding, with galaxies moving, some away and some toward us. However, there’s no unique ‘center’ of the expansion. […]

An image of a blue spiral galaxy.
Astronomy

The Rotation Velocity of Elliptical and Disk Galaxies

January 6, 2023

Newton’s theorem, used to calculate rotation velocity, applies to elliptical galaxies. It doesn’t apply to flat disks as, in order to do so, one has to do integrals involving modified Bessel functions of the second kind. […]

A 3D rendition of a black hole.
Astronomy

How Active Galaxies and Black Holes Are Related

January 5, 2023

When it comes to understanding the relationship between an active galaxy and a black hole, it is one of cause and effect. There is a negative feedback between the black hole and the surrounding galaxy as when the galaxy grows too fast, the black hole produces out-flows that halt any further growth. […]

An image of a starry disk around supermassive black hole.
Astronomy

Dark Matter: Accreting Black Holes

January 5, 2023

Accreting black holes at the center of a galaxy are slightly more massive. Gas is funneled toward the innermost edge of the accretion disk. The gas is hot, ionized, plasma and is likely to turn into a tangled internal magnetic field. […]

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