The Earth gets denser going from its outer layers in. The least dense layer is the upper mantle, with density getting larger with the successive layers of the lower mantle, outer core, and finally the inner core. Density can be calculated by dividing the mass by the volume....
Jupiter-bound comet, pockmarked moons tell a strange tale Some astronomers have interpreted the similarities between Pluto and Charon to suggest that this binary system formed when Pluto collided with another object of roughly the same size. The violent impact would have stripped chunks of mass from...
Gas giants that didn't pass between Earth and their star during Kepler's survey would have gone undiscovered. "We predict that WFIRST will detect several tens of Mars-mass free-floating planets," Barclay said. "This is on the assumption that Jupiter-like planets are uncommon. If Jupiters ...
Lai, and M. H. Wong. The atmospheric influence, size and possible asteroidal nature of the July 2009 Jupiter impactor. Icarus, 211:587-602, Jan. 2011.Orton, G.S., Fletcher, L.N., Lisse, C.M., Chodas, P.W., Cheng, A., Yanamandra-Fisher, P.A., Baines, K.H., Fisher, B...
Jupiter and slowly zooms towards small masses and radii planets to display a comparison of the physical properties of the Kepler-138 planets relative to Earth, Venus, Mars and Mercury. The planet Kepler-138b is the first exoplanet smaller than the Earth to have both its mass and its size ...
Star Type:WOH G64 is classified as a red supergiant with a stellar classification of M5 I, indicating a luminous red supergiant. Size and Distance:With an estimated initial mass of 25 times that of the Sun, WOH G64 spans between 1,540 and 2,575 times the Sun's radius, and it resides...
The new findings, published today (Jan. 9) in the journal Neurology, suggest that the combination of obesity (as measured by body mass index, or BMI) and a high waist-to-hip ratio may be a risk factor for brain shrinkage, the researchers said. However, the study found only an associati...
After Lucy reaches each asteroid, scientists will be able to measure each asteroid’s mass. That information, combined with size and shape data from flybys, occultations, and other Earth-based techniques, will help reveal the density of each asteroid. Density tells scientists about composi...
Origin of short-period comets A statistical analysis of the Jupiter group of short-period comets is carried out. The distribution of cometary orbital nodes is investigated, along with the relationship between orbital inclination and longitude of the ascending node. T... VP Tomanov 被引量: 9发表...
And yet, when it comes to sizes of planets, specifically their mass and radius, there are some limitations. And for that, we have physics to blame. I am a planetary astrophysicist and I try to understand what makes a planet able to support life. I look at the chemical connection between...