Space

About four billion and several million years ago, the earth was born from the infinitesimal particles floating in a rotating cloud of hydrogen and helium….
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Our knowledge of the Earth’s interior comes from the study of seismic waves during earthquakes, observations of different types of rocks, laboratory experiments, and magnetic…
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The Near-Earth (not hazardous to Earth) asteroid 433 Eros was explored by the NEAR-Shoemaker spacecraft in 2000-2001. This mission, built and designed by the Johns…
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The Department of Earth, Planetary, and Space Science (EPSS) at UCLA has an impressive record of leadership or participation in NASA missions. For example, the…
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The theory of quantum mechanics lies at the basis of our modern understanding of how microscopic particles such as electrons and atomic nuclei behave. Despite…
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Explaining why Mars is so much smaller and accreted far quicker than the Earth is a long-standing problem in planetary science.  Like Earth, Mars’ orbit…
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A surprising radial distribution of potential vorticity (PV) of Martian atmosphere represents a minimum PV value at the winter pole, which is surrounded by an…
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The advent of newspace and commercial space (SpaceX, Blue Origin, etc.) in the early 2000s has brought about the resurgence of the decades-old concept of…
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Among the asteroids, small worlds orbiting the Sun between Mars and Jupiter, we find those genetically related to each other. They are members of the…
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The gravitational field outside a planet, a moon, an asteroid, or a comet is crucial for determining that body’s mass, density, and some details of…
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Most of the surface of Mars is currently too cold, and the atmosphere is too thin, for liquid water to be present on the surface….
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