Planet nine may be orbiting far from the Sun, at the edge of our solar system. Astronomers, seeing odd irregularities in the orbits of the outer planets suspect another, unknown, planet may orbit beyond the eight we know of today.
The number of known planets in our solar system has risen and fallen over time. From the six worlds known to ancient people (including Earth), astronomers have found the planets Uranus and Neptune.
Despite its classification of Pluto as a dwarf planet, it is now recognized as the first Trans-Neptunian Object (TNO), and the first member of the Kuiper Belt, ever found. Today, we know of many minor bodies beyond Neptune — 316 were recently discovered in just a single study.
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Do the TRAPPIST-1 planets have atmospheres?
The study, which recently appeared in the journal Astrobiology , was conducted by an international team of researchers from the Geneva Astronomical Observatory (GAO), the University of Bern, the Laboratoire d'astrophysique de Bordeaux (LAB), the Astrophysics Research Group at Imperial College London, and the Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado.
Initially, it was a team of astronomers from the University of Liege, Belgium, who detected three of the system's exoplanets using transit spectroscopy. For this method, astronomers monitor stars for dips in their luminosity, which are the result of planets passing in front of the star relative to the observer.
11 DOCTOR WHO Planets We Never See But Want To Visit - Nerdist
Now is the perfect time for the Doctor to show up and offer a companion spot. Earth is in complete disarray and pretty much everyone wishes they could head off to another planet. The Doctor ‘s time and space adventures have taken companions to some pretty incredible planets. But there are a lot of off-screen adventures too. What about the Whoniverse planets that have never shown up on screen?
The “Doctor Donna” chats with Ten about Felspoon, a planet with mountains that sway in the breeze. She says she’s ready to take off and go there before she realizes what’s happening to her mind. It would be lovely to visit Felspoon in Donna’s honor and watch those majestic mountains move back and forth.
Could mini-Neptunes be irradiated ocean planets? | EurekAlert! Science News
Many exoplanets known today are "super-Earths", with a radius 1.3 times that of Earth, and "mini-Neptunes", with 2.4 Earth radii. Mini-Neptunes, which are less dense, were long thought to be gas planets, made up of hydrogen and helium.
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Notes * In collaboration with a researcher at the Laboratoire Atmosphères et Observations Spatiales (CNRS/UVSQ/Sorbonne Université) ** Supercritical water exists at very high pressures and temperatures.
Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.
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UAE launches "Hope" Mars orbiter to study red planet's atmosphere - CBS News
The UAE's $200 million "Hope" mission was designed with two major goals in mind: To study the martian atmosphere with three state-of-the-art instruments and to provide a "moonshot moment" for the youth of the Middle East, serving as inspiration to pursue careers in math and science.
"The objective was basically to use this mission to cause a disruptive change in the mindset of the youth, to create a research and development culture to support the creation of an innovative and creative and a competitive knowledge-based economy," said Omran Sharaf, the Hope project manager.
Five planets visible in the early morning sky this weekend
ROANOKE, Va. (WDBJ) - This has been an active month for skywatchers. Not only has the comet NEOWISE created a buzz, but the International Space Station has also been quite visible. This weekend, five planets will also dot the early morning skies, an event that won't happen again until June 2022.
If you're hoping to spot them all at once, you'll need to get up extra early and get a good view of the horizon.
To the right of the crescent moon will be Mercury. Just above that, much brighter Venus. Both in the eastern sky 45 minutes before sunrise.
Cool Animation Shows Different Rotations of Our Solar System's Planets | king5.com
'Disk Detective' needs your help finding disks where planets form
"We're trying to understand how long it takes for planets to form," said astrophysicist Marc Kuchner, the Disk Detective project lead at NASA's Goddard Space Flight Center in Greenbelt, Maryland, and the Citizen Science Officer for NASA's Science Mission Directorate. "Tracing the evolution of these disks is the main way that we know how long planet formation takes."
Disk Detective has just relaunched with a new website and a new dataset of about 150,000 stars. This new version of the project focuses on M dwarfs, which represent the most common type of star in the Milky Way galaxy. It also concentrates on brown dwarfs , which are balls of gas that don't burn hydrogen the way stars do and often more closely resemble giant planets like Jupiter.
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