Related Experiment Video
Updated: Jul 7, 2026

Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
Discovery of a basaltic asteroid in the outer main belt
Lazzaro1, Michtchenko, Carvano
1Observatorio Nacional, Departamento de Astrofisica, Rua Gal. Jose Cristino 77, 20921-400 Rio de Janeiro, Brazil. Instituto Astronomico e Geofisico, Universidade de Sao Paulo, Av. Miguel Stefano 4200, 04301-904 Sao Paulo, Brazil. De.
Abstract:
Visible and near-infrared spectroscopic observations of the asteroid 1459 Magnya indicate that it has a basaltic surface. Magnya is at 3. 15 astronomical units (AU) from the sun and has no known dynamical link to any family, to any nearby large asteroid, or to asteroid 4 Vesta at 2.36 AU, which is the only other known large basaltic asteroid. We show that the region of the belt around Magnya is densely filled by mean-motion resonances, generating slow orbital diffusion processes and providing a potential mechanism for removing other basaltic fragments that may have been created on the same parent body as Magnya. Magnya may represent a rare surviving fragment from a larger, differentiated planetesimal that was disrupted long ago.
Related Concept Videos
Rocket Propulsion in Empty Space - I
Rocket Propulsion In Empty Space - II
Schwarzschild Radius and Event Horizon
The minimum speed required to launch a projectile from the surface of an object to which it is gravitationally bound so that it eventually escapes the object’s gravitational field is called the escape velocity. The escape velocity is independent of the mass of the object. Merging the idea of escape velocity with the...
Detection of Black Holes
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
External Female Genitals
Quarrying of Stone
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the block.

