Sentences with phrase «proposed by astronomer»

The observations are consistent with the hypothesis that Vega is viewed with its pole of rotation pointing toward Earth (first proposed by astronomer Richard O. Gray), so that the relatively cool equator corresponds to the darker «limb of the star» and heightens the gravity - darkening effect.

Surely this could be used as evidence for panspermia, the theory that life on Earth was seeded from space, as proposed by astronomers Fred Hoyle and Chandra Wickramasinghe.

Before the August 2006 decision, several objects were proposed by astronomers — including at one stage by the IAU — as planets.

Not exact matches

Newton, for example, told the Astronomer Royal, Flamsteed, to correct some astronomical data because it disagreed with theoretical predictions; several factors, including refraction of light by the atmosphere, were later proposed to justify the corrections.11

And when astronomers discovered a star in 2015 whose light seems to occasionally get blocked by something big, one researcher proposed it was an alien megastructure.

Chang says it would cost about $ 20 million, a tiny fraction of the $ 2 billion radio astronomers want for the proposed Square Kilometre Array (SKA) of radio telescopes, which aims to trace large - scale structure by locating individual galaxies.

An interdisciplinary team of UvA physicists and astronomers proposed to search for primordial black holes in our galaxy by studying the X-ray and radio emission that these objects would produce as they wander through the galaxy and accrete gas from the interstellar medium.

«By mixing [the data from] these instruments, we'll get information about the current star formation rate, but we'll also get information about the star formation history,» explained Hans Ulrik Nørgaard - Nielsen, an astronomer at the Danish Space Research Institute in Denmark and the principal investigator for the proposed observations.

The idea that the clouds of Venus are potentially habitable was proposed decades ago by biophysicist Harold Morowitz and astronomer Carl Sagan.

In 1988, however, numerical calculations of the outer planets showed Pluto's orbit to be «chaotic» and the idea of a chaotic solar system was proposed in 1989 by astronomer Jacques Laskar, now at the Paris Observatory.

Astronomers used the example of Mars» ice caps to analyze the radar reflections seen on Mercury and propose that those, too, were caused by ice trapped in eternally - dark craters on that otherwise hot world.

Hubble astronomer Paul Kalas, of the University of California at Berkeley, and team members proposed in 2005 that the ring was being gravitationally modified by a planet lying between the star and the ring's inner edge.

The proposed WFIRST - AFTA mission will greatly complement any present and future planet - hunting missions, by allowing astronomers to map the distribution of exoplanets throughout the galaxy.

The precise geometric and organic forms of the two sculptures on view by John Duff (American, b. 1943) are from the series titled «Inside the Kepler Conjecture,» referring to the complex mathematical theories proposed by Johannes Kepler, a 16th century astronomer who was the first to explain planetary movement.