Sentences with phrase «of planetary mass»

Anyone apprised of the palaeolithic massacre of the African and Eurasian megafauna, or the extermination of the great beasts of the Americas, or the massive carbon pulse produced by deforestation in the Neolithic must be able to see that the weapon of planetary mass destruction is not the current culture, but humankind.

This is the first known example of a gravitationally bound pair of planetary mass objects, and astronomers can't agree on a name for them.

Although the velocities do not lead to a reliable orbit and mass determination, they are able to constrain the mass to a 3 -LCB- \ sigma -RCB- upper limit of 124 MEarth, safely in the regime of planetary masses, thus earning the designation Kepler - 22b.

Not exact matches

All of these scientific hypotheses boil down to first there was an planetary mass covered with water and providing the correct conditions for chemical reactions to create a simple organic compound from which life was formed.

This is that, under the combined influence of two irresistible forces of planetary dimensions (the geographical curve of the Earth, by which we are physically compressed, and the psychic curve of Thought, which draws us closer together), the power of reflection of the human mass, which means its degree of humanization, far from having come to a stop, is entering a critical period of intensification and renewed growth.

The human mass is spiritually warmed and illumined by the iron grip of planetary compression; and the warming, whereby the rays of individual interaction expand, induces a further increase, in a kind of recoil, of the compression which was its cause... and so on, in a chain - reaction of increasing rapidity.

So what finally lies ahead of us is a planetary arrangement of human mass and energy, coinciding with a maximal radiation of thought — at once the external and internal «planetization» of Mankind.

Goper reation according to the Divine Word of God Genesis 1 science in CAPS; FIRST CAUSE «In the beginning God» (v1)-- we are given the first cause, causation BIG BANG «created the heavens and the earth» (v1)-- matter and energy created, singularity establishing time and space «Earth dark formless mass «(v 2)-- chaotic sub atomic particles STAR IGNITION «Let there be light» (Day One)-- God was the light or light from reionizing the universe PLANETARY ACCRETION = > EARTH, MOON = > WATER = > ATMOSPERE «Separated the waters to make atmosphere» (Day Two)-- molten earth or water forming atmosphere as cools.

The International Astronomical Union defines «planet» as a celestial body that, within the Solar System that is in orbit around the Sun; has sufficient mass for its self - gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape; and has cleared the neighbourhood around its orbit; or within another system, it is in orbit around a star or stellar remnants; has a mass below the limiting mass for thermonuclear fusion of deuterium; and is above the minimum mass / size requirement for planetary status in the Solar System.

After shining for many millions of years, stars end their lives, mainly, in two ways: very high mass stars die very violently as supernovae, while low mass stars end as planetary nebulae.

When our solar system was in its infancy 4.5 billion years ago, a swarm of protoplanets swirled around the sun — some of which coalesced into larger and larger masses, while others were blasted to smithereens in a demolition derby of planetary proportions.

«One of the most startling discoveries about other planetary systems has been that the most common type of planet out there has a mass between that of Earth and that of Neptune,» says Batygin.

Led by Renu Malhotra, a Regents» Professor of Planetary Sciences in the UA's Lunar and Planetary Lab, the team found that the four Kuiper Belt Objects with the longest known orbital periods revolve around the Sun in patterns most readily explained by the presence of a hypothetical «Planet Nine» approximately ten times the mass of Earth.

Planetary nebulae, which got their name after being misidentified by early astronomers, are formed when an ageing star weighing up to eight times the mass of the sun ejects its outer layers as clouds of luminous gas (see Why stars go out in a blaze of glory).

All that extra mass creates internal pressures far exceeding terrestrial squeezing, with implications for three life - critical planetary properties: the maintenance of oceans, climatic «thermostats» and magnetic fields.

The data required first, planetary mass, is for example provided by the HARPS - spectrograph in Chile, which was developed by the University of Geneva and Bern in cooperation with further partners.

Gliese 876 is a modest star, just one - third the mass of our sun and only 15 light - years away, but it has a history - making planetary system all its own.

Many extrasolar planetary systems have large close - in planets, from rocky super-Earths (about two to 10 times the mass of Earth) to gassy mini-Neptunes or hot Jupiters.

Alternately, the planet can accumulate mass slowly as bits of dust collide and become pebbles, which collide to become boulders, which collide to become asteroids, and so on, until a rocky planetary core develops.

But now, data gathered during five of Cassini's final 22 passes before it plunged into the planet are bringing the mass of the B ring into focus, Luciano Iess, a planetary scientist at the Sapienza University of Rome, announced at the AGU meeting today.

Other theories involve planetary collisions that knock worlds off course or simply a large mass of materiallike an asteroid that jumps aboard and, by its mass and impact, tilts the once - flat orbit.

Those measurements reveal that the B ring, which makes up 80 percent of the total ring mass, is about 15 billion billion kilograms, or 0.4 times that of Saturn's moon Mimas, planetary scientist Luciano Iess of Sapienza University of Rome said at the meeting on December 12.

The low luminosity of the companions and the estimated age of the system imply planetary masses between 5 and 13 times that of Jupiter.

ARM will demonstrate advanced, high - power, high - throughput solar electric propulsion; advanced autonomous high - speed proximity operations at a low - gravity planetary body; controlled touchdown and liftoff with a multi-ton mass from a low - gravity planetary body, astronaut spacewalk activities for sample selection, extraction, containment and return; and mission operations of integrated robotic and crewed vehicle stack — all key components of future in - space operations for human missions to Mars.

JUPITER dominates the planetary system, weighing in at a mass two and a half times that of all the other planets put together.

The general consensus among planetary scientists is that accretion is extremely unlikely to produce moons more than a few ten - thousandths the mass of their host planet.

In contrast, many hot Neptunes — close - in giant worlds with roughly 5 % of Jupiter's mass — do have planetary neighbors.

A cloud is a visible mass of condensed droplets or frozen crystals suspended in the atmosphere above the surface of the Earth or another planetary body.

A team led by astronomer Kevin Luhman of the Harvard - Smithsonian Center for Astrophysics (CfA) in Cambridge, Massachusetts, found extra emissions of infrared light from a faint dwarf with just 15 times Jupiter's mass — at the threshold of what astronomers consider «planetary mass.»

Astronomers were able to pin down a planetary mass in only one case: a lucky alignment where the planet crossed directly in front of its star (ScienceNOW, 15 November 1999)

The more solid planetary detection is the super-Earth HD 1461 b, with an estimated mass 7.4 times that of Earth.

According to this model, the violent wind that creates a planetary nebula is also the engine that transforms a bloated red giant into the burnt - out cinder of a white dwarf, a metamorphosis common to all stars of low and intermediate mass — stars up to eight times more massive than the sun.

«In our solar system we have no planets between the mass of Earth and the mass of Uranus, which is about 15 Earth masses,» Jonathan Fortney of the University of California, Santa Cruz, a planetary scientist affiliated with the Kepler mission, said during the teleconference.

Other astronomers find the detections convincing, although most reserve the name «planet» for bodies that form within a planetary system and orbit stars, says theorist Alan Boss of the Carnegie Institution of Washington in Washington, D.C. «They should call them «planetary - mass brown dwarfs,»» Boss says.

Erik Hauri at the Carnegie Institution of Washington and his colleagues analysed lunar rocks and estimate that meteorites equivalent to just 0.001 to 0.004 lunar masses could have brought water to the molten moon when it was 100 million years old (Earth and Planetary Science Letters, doi.org/xk6).

Title: Planetary Systems Around Cool Stars: a Window Towards Characterization of Small Planets Abstract: Due to their favourable mass - radius ratios, current technical means enable characterization of the bulk properties of small planets around low - mass stars efficiently.

Gravitational microlensing works by a planetary body — or any body for that matter with significant mass, such as a brown dwarf or even a black hole — passing in front of a star.

I study the statistical properties of extrasolar planetary systems around stars of different masses, and combine these results with numerical simulations to better understand their origins and habitability.

Eventually, Stars Aa and Ab will lose much of their current mass, from intensified stellar winds that eventually puff out their outer gas envelopes of hydrogen and helium (and lesser amounts of higher elements such as carbon and oxygen) into interstellar space as planetary nebulae.

On January 16, 2002, a team of astronomers (including (Debra A. Fischer, Geoffrey W. Marcy, R. Paul Butler, Steven S. Vogt, and Gregory W. Henry) announced the discovery of a planetary companion «b,» whose mass has been estimated at a minimum of 20 percent that of Jupiter (exoplanets.org; and Fischer et al, 2003, in pdf) with a similar diameter.

On March 5, 2015, a team of astronomers announced that numerical simulations constrain the size of planetary candidate Alpha Centauri Bb (with orbital period P = 3.24 days; and semi-major axis a = 0.042 AU) to less than 2.7 Earth - masses at an inclination of 45 to 53 degrees relative to Stars» AB orbital plane (Plavchan et al, 2015).

«One of the most startling discoveries about other planetary systems has been that the most common type of planet out there has a mass between that of Earth and that of Neptune,» said Batygin.

The rebound can be used to weigh the ice sheet and determine how much mass it has lost and is currently losing, said Doug Wiens, PhD, professor of earth and planetary sciences in Arts & Sciences at Washington University in St. Louis.

The mass and orbit of planetary candidate «b» is similar to 79 Ceti b, depicted at left with rings and two moons, as imagined by Bacon (more from NASA and Astronomy Picture of the Day).

This new technique provides a way to measure the true mass of a planet since both light from the star and the planet are detected, which can provide more accurate insights about the planet's formation and the evolution of its planetary system.

This new finding is important because it's one of the first exoplanets in this mass range that lies beyond the «snow line» — the distance during formation of a planetary system beyond which ice can form from water, ammonia, and methane.

Based on astrometic as well as high - cadence radial velocity measurements, planetary candidate «c» appears to have around 14.0 +2.3 / -5.3 times the mass of Jupiter (McArthur et al, 2010).

The expected Doppler signals are too small to confirm them by demonstrating that their masses are in the planetary regi... ▽ More We present an investigation of twelve candidate transiting planets from Kepler with orbital periods ranging from 34 to 207 days, selected from initial indications that they are small and potentially in the habitable zone (HZ) of their parent stars.

μm) spectra, obtained on the 2.7 m Harlan J. Smith Telescope at McDonald Observatory with the Immersion Grating INfrared Spectrometer (IGRINS)(Park et al. 2014, SPIE, 9147, 1), for a variety of Galactic PDRs including regions of high mass star formation, reflection nebulae, and planetary nebulae.

We confirmed the planetary nature of the transiting companion using this mass limit and Doppler tomographic observations to verify that the companion transits HD 332124.