and a 20,000-year cycle in the "wobble" — much like a top wobbles — of the Earth's axis (precession). All three of orbital cycles — called Milankovitch cycles — impact African climate on ...

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a phenomenon known as axial precession. In about 12,000 years, Vega, another bright star, will usurp Polaris as our guiding ...

Gas swirls around a black hole due to its intense gravity, forming an accretion disk. These accretion disks, being among the ...

When a black hole spins on its axis, the accretion disk wobbles like a spinning top. This precessional motion has been studied in less luminous accretion disks, but it is unclear if the same ...

Like our Moon, the large icy satellites of Jupiter are thought to be in a Cassini State, an equilibrium rotation state characterized by a synchronous rotation rate and a precession rate of the ...

Axial flow pumps, also called propeller pumps, are centrifugal pumps which move fluid axially through an impeller. They provide high flow rate and low head, but some models can be adjusted to run ...

The simplest structural member is an axial bar, or rod. An axial bar is a long straight body on which the forces are applied along the longitudinal axis. Cables can also be analyzed as axial members ...

Earth’s tilt means the Sun both rises earlier and sets later as we head towards summer. When the clocks (in some states) ...

This shift is a result of Earth’s slow wobbling on its axis, known as precession. Canis Minor and Canis Major represent Orion’s two hunting dogs, which trail him across winter skies.

The alliance is under scrutiny after the recent Israeli strikes in Lebanon. TURKEY Militias in Syria and Iraq LEBANON SYRIA Iran ...