Sentences with phrase «planets around such»

Not exact matches

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A solitary planet in an eccentric orbit around an ancient star may help astronomers understand exactly how such planetary systems are formed.

According to the researchers» calculations, such a hypothetical planet would complete one orbit around the Sun roughly every 17,000 years and, at its farthest point from our central star, it would swing out more than 660 astronomical units, with one AU being the average distance between Earth and the Sun.

The spectacular discs that ALMA has imaged around much younger stars, such as HL Tauri, contain much more material that is in the process of forming planets.

This was a surprise, because the gas should have spread evenly around the planet, so Franck Lefevre and François Forget of the Pierre and Marie Curie University in Paris, France, created a climate model to explain how such concentrations might form.

Based on the numbers of such planets that astronomers have found in tight orbits around stars nearer to our sun, Gilliland's colleagues expected to see 15 or 20 planets in 47 Tucanae.

Due to gravitational effects in the solar system, such as the tug of other planets, Mercury's oval - shaped path around the sun slowly turns, or precesses.

Meanwhile, planets keep showing up in places scientists once considered unlikely, such as around double stars.

For a planet to stay warm around such a cool star, it has to huddle up close, offering the best chance to get noticed.

The presence of such thick dust clouds in the inner regions around some stars may pose an obstacle to the direct imaging of Earth - like planets in the future.

Studying such moons is relevant to conditions in our early solar system, Mittal said, when it's likely there were many more moons around the planets that have since disintegrated into rings — the suspected origins of the rings of the outer planets.

Fissures and fractures around Tombaugh Regio and other parts of the planet suggested a subsurface layer of watery slush might be slowly solidifying, breaking up the surface as it expands like ice cubes in a freezer — but other, drier possibilities could also explain such cracks.

Theorists who study planet formation could see no way for a planet that big to grow in such tight confines around a newborn star.

This makes it a perfect laboratory to study how many planets form in such a crowded environment, and whether they form mostly around more massive or less massive stars.»

In some rare cases, a planet in a binary system may spiral around the axis that connects its two stars — although how such planets come to be is unclear

Such a sequence of events, on a much larger scale, may explain the birth of our own Moon in the early days of the Solar System, as well as the origin of many other satellites around planets and asteroids.

Last year, a ground - based infrared study of one such cloud, around a star called HR 4796A, revealed a «hole» in the debris cloud, perhaps indicating the birthplace of planets.

Norman Myers, a marathon runner in his spare time, takes the reader several times around the planet to support his thesis with regional case studies, while considering how problems such as population, mass migrations and the massive extinction of species are related.

Juno carries no instrument capable of directly measuring such asymmetries, but they should manifest as subtle alterations in the spacecraft's motion as it moves through its 53 - day polar orbit around the planet.

Provided their spacecraft stays healthy and funded, the Juno team is contemplating additional measurements that could further probe Jupiter's interior, such as monitoring tidal bulges raised by large moons whipping around the planet.

In 1915, Einstein explained that gravity arises because massive bodies warp space and time, or spacetime, causing free - falling objects to follow curved paths such as the arc of a thrown ball or the elliptical orbit of a planet around its sun.

Runyon and his co-authors argue for a definition of «planet» that focuses on the intrinsic qualities of the body itself, rather than external factors such as its orbit or other objects around it.

Fred C. Adams, an astrophysicist at the University of Michigan who studies planet formation, says such finds indicate we still don't know the true variety of worlds out there: «Planets can wiggle around in a lot of ways.»

Detecting planets in orbit around very young stars proves to be a significant observational challenge, since such stars are monsters in comparison with our own Sun.

A massive object, such as the sun, would create a dent in spacetime, a gravitational well, causing any surrounding objects, such as the planets in our solar system, to follow a curved path around it.

The daily image downloads from the Mars rover Opportunity — yes, it's still driving around the Red Planet after more than seven years — and the Saturn orbiter Cassini have been so warmly welcomed that missions with less open policies, such as NASA's current Mercury and Vesta orbiters, let alone the European Space Agency's Venus and Mars orbiters, are often subject to harsh criticism.

Ancient Greek mathematicians and astronomers were using geometry around the same time, but only to make calculations involving real, 3D space, such as using circles torepresent the orbits of planets around Earth.

According to two new studies, such clouds also arise around the failed stars known as brown dwarfs — even ones as small as giant planets.

The NASA / ESA Hubble Space Telescope is already being used to search for atmospheres around the planets and team member Emmanuël Jehin is excited about the future possibilities: «With the upcoming generation of telescopes, such as ESO's European Extremely Large Telescope and the NASA / ESA / CSA James Webb Space Telescope, we will soon be able to search for water and perhaps even evidence of life on these worlds.»

To be seen over such an expanse, the meteors must have been in orbit around our planet.

He continues, «This is especially important because upcoming space missions such as TESS and PLATO should find many small planets around bright stars and we will want to follow up the discoveries with ground - based instruments.»

Researchers identify such planets by first looking for those that are situated within the «habitable zone» around their parent stars, which is where temperatures are warm enough for water to pool on the surface.

The oldest detected Kepler planets (exoplanets found using NASA's Kepler telescope) are about 11 billion years old, and the planetary diversity suggests that around other stars, such initially frozen worlds could be the size of Earth and could even provide habitable conditions once the star becomes older.

Such information could tell us a lot about possible planets around other stars as well.

Astronomers like to find such disks because they might be able to catch the star partway through the planet formation process, but it's highly unusual to find such disks around brown dwarfs or stars with very low masses.

MOFFET FIELD, CALIFORNIA — NASA's Kepler space telescope appears to have confirmed the existence of an alien world smaller than our own Earth — the first time such a planet has been discovered around a star like our sun.

Ehrenreich and his team think that such a huge cloud of gas can exist around this planet because the cloud is not rapidly heated and swept away by the radiation pressure from the relatively cool red dwarf star.

He and his colleagues have conducted long - term studies of the dust disks around old stars and the changes in aged red giants such as Betelgeuse, and are preparing the telescopes to look for possible infrared laser signals from newly discovered planets circling nearby stars, in search of extraterrestrial civilizations.

To answer such questions, they study the rotating discs of gas and dust present around young stars from which planets are built.

At that distance from the star, such a planet would have an orbital period of about 124 days, or around a third of an Earth year.

You said, it was not assumed that planets are being formed around such a young star as HL Tau.

Directly imaged planets, such as those discussed by Kevin Wagner in a previous blog post, are mainly discovered around stars more massive than the sun (A or F stars)...

At that distance from the star, such a planet would have an orbital period of around 4.7 Earth years.

[1] Earlier examples of ALMA research have been described in press releases such as «ALMA Sheds Light on Planet - Forming Gas Streams — Tantalizing signs of flows feeding gas - guzzling giant planets,» «Sweet Result from ALMA — Building blocks of life found around young star.»

However, the inner, eccentric orbit of a giant planetary companion «b» recently discovered around 54 Piscium would probably disturb the orbit of such an Earth - type planet.

Such a planet would have an orbital period of around 1.6 years.

Such a large temperature difference indicates that the planet's atmosphere absorbs and re-radiates starlight so quickly that the gas circling around it in the outer atmosphere cools off quickly — unlike Jupiter, which appears to have a relatively even temperature within planetary bands of atmospheric circulation.

Hence, Earth - type life around flare stars may be unlikely because their planets must be located very close to dim red dwarfs to be warmed sufficiently by star light to have liquid water (about 0.007 AU for Proxima), which makes flares even more dangerous around such stars.

A solitary planet in an eccentric orbit around an ancient star may help astronomers understand exactly how such planetary systems are formed.

Such a planet would have an orbital period of around 1.3 Earth years.