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Currently Browsing: Results for Tag "astronomy"

Closest exoplanet Proxima b remains mysterious, in the absence of direct observation

Closest exoplanet Proxima b remains mysterious, in the absence of direct observation The best we can do right now is make some educated guesses about conditions on Proxima b.According to researchers at France’s CNRS, there’s at least a possibility that Proxima b has liquid oceans on the surface.

There may be 10 times more galaxies in the universe than we thought

There may be 10 times more galaxies in the universe than we thought But a new analysis of Hubble Telescope data indicates that astronomers might have vastly underestimated the scale of the universe.There may actually be 10 times more galaxies in the universe than we previously thought.

Planet nine might be pulling our solar system out of alignment

Planet nine might be pulling our solar system out of alignment Their observations indicate that planet nine could be causing a “wobble” in the solar system.While we can’t see planet nine, astronomers have detected a number of bizarre effects in the solar system that could be explained by the object.

Astronomers get a chance to watch a rare red nova in its opening strains

Astronomers get a chance to watch a rare red nova in its opening strains As you might suspect, a contact binary is an unstable state of affairs.When that finally happens, the cores of the two stars will merge and then explode as a luminous red nova.

Oxford scientists call into question the idea that the universe’s expansion is accelerating

Oxford scientists call into question the idea that the universe’s expansion is accelerating Type Ia supernovae are affectionately called “standard candles” in astronomy.When the Oxford team did their own analysis of the universe’s expansion scenarios, their best-case, most-certain outcome was much less confident that the universe is expanding at an accelerating rate.

Oxford scientists call into question the idea that the universe's expansion is accelerating

Oxford scientists call into question the idea that the universe's expansion is accelerating When the Oxford team did their own analysis of the universe’s expansion scenarios, their best-case, most-certain outcome was much less confident that the universe is expanding at an accelerating rate.Instead, the data “lends itself” to the conclusion that the rate of expansion is constant.

Nearby exoplanet Proxima b could be a habitable ocean world

Nearby exoplanet Proxima b could be a habitable ocean world That’s not the case with Proxima b, a small exoplanet that orbits the nearest star to our own, Proxima Centauri.Scientists haven’t been able to spot Proxima b transiting its star yet, but a new study of the Proxima Centauri system shows how Proxima b could be a habitable ocean planet.

NASA completes construction of the James Webb Space Telescope

NASA completes construction of the James Webb Space Telescope The James Webb Space Telescope (JWST) comes up a lot when we talk about the very boundaries of our understanding of the cosmos.For more than a quarter century, the Hubble Space Telescope has been our best window to the wider universe, but it can only do so much.

The 25 best Hubble Space Telescope images

The 25 best Hubble Space Telescope images The Hubble Space Telescope has been silently hovering above Earth for over 25 years, but it’s still returning spectacular images of the cosmos.Most of the famous Hubble images were taken with the Wide Field and Planetary Camera 2 (WFPC2), and the Wide Field Camera 3 (WFC3).

Chandra Observatory spies densest-ever concentration of black holes

Chandra Observatory spies densest-ever concentration of black holes The universe is a big place, and we know from targeted observations that there are a lot of black holes out there.The Chandra team has just released a new image from a long-term study of the sky that shows the densest concentration of black holes ever seen.

NASA tells astronomers to submit proposals for James Webb Telescope observations

NASA tells astronomers to submit proposals for James Webb Telescope observations Now that the telescope has been built and is undergoing final testing, NASA has turned its attention to the future — namely, what the Webb Telescope is going to do once it’s deployed.The space agency has asked astronomers to start submitting proposals for observations beginning in April 2019.

Hubble telescope to scout the Voyagers' paths through interstellar space

Hubble telescope to scout the Voyagers' paths through interstellar space Our Voyager spacecraft are boldly going where no man has gone before.Both Voyager spacecraft were launched in 1977, on missions to visit Jupiter, Saturn, Uranus and Neptune.

What is the Fermi Paradox?

What is the Fermi Paradox? The so-called Fermi Paradox comes up whenever we talk about the search for life outside our solar system, but what does the Fermi Paradox say about our place in the universe?It includes factors for the number of stars, the probability of habitable planet formation, the development of intelligent life, and so on.

Astronomers may have figured out why alien planets lack exomoons

Astronomers may have figured out why alien planets lack exomoons Astronomers have found a great many exoplanets out there among the stars, but one thing they have not found is exomoons.There’s no evidence of moons orbiting any of the planets we’ve found orbiting other stars, and it’s not clear why.

Asteroid discovered hours before it passes between Earth and moon

Asteroid discovered hours before it passes between Earth and moon While you were sleeping last night, an asteroid passed close to Earth—very close.That’s closer than the orbit of the moon, which is 238,000 miles away.

Scientists want you to help them find planets in this database of stars

Scientists want you to help them find planets in this database of stars So now, researchers are hoping that members of the public will use their free time to comb through and find hints of planets circling those alien suns.By checking out these measurements, scientists can actually learn more about how a star wobbles in its orbit.

How far they'll go: 'Moana' shows the power of Polynesian celestial navigation

How far they'll go: 'Moana' shows the power of Polynesian celestial navigation Moana touches on Polynesian voyaging, showing the eponymous main character using traditional celestial techniques to navigate across the sea.The film accomplished this reasonably well, especially in respect to celestial navigation, despite the producers facing criticism for cultural appropriation and commodification.

Scientists observe first planet-induced stellar pulsations

Scientists observe first planet-induced stellar pulsations But researchers now claim to have found the first example of stellar pulsations caused by an exoplanet.The star HAT-P-2 is emitting visible pulses that seem to be a result of a particularly large exoplanet in a highly eccentric orbit.

7 planets orbiting a star 39 light-years away could play host to alien life

7 planets orbiting a star 39 light-years away could play host to alien life Scientists have discovered that at least seven Earth-sized worlds circle the star TRAPPIST-1, a ultracool dwarf star only about 40 light-years from Earth.Just like Jupiter's moons, the planets orbiting TRAPPIST-1 all interact with one another, meaning that their orbits are influenced by one another.

NASA announces discovery of seven Earth-like exoplanets in a single solar system

NASA announces discovery of seven Earth-like exoplanets in a single solar system NASA has announced the discovery of an amazing planetary system in orbit of a nearby star consisting of seven Earth-like planets in the habitable zone.This was exciting enough to warrant a quick follow up by the Spitzer Space Telescope — TRAPPIST-1’s small size and low temperature was ideal for study with Spitzer’s infrared instruments.