One day, humankind may step foot on another habitable planet. That planet may look very different from Earth, but one thing will feel familiar — the rain.
“The humble raindrop is a vital component of the precipitation cycle for all planets,” said Robin Wordsworth, Associate Professor of Environmental Science and Engineering at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) and senior author of the paper. “If we understand how individual raindrops behave, we can better represent rainfall in complex climate models.”
Most alien civilisations risk fuelling global warming on their planets | New Scientist
Most planets inhabited by advanced civilisations would be likely to face c atastrophic climate change as a result of burning fuel, researchers have found.
Human activity has had a geological impact on Earth, putting it into a new epoch known as the Anthropocene . Adam Frank at the University of Rochester, New York, and his colleagues wanted to know if the same thing might happen on other Earth-like planets.
The researchers began with the assumption that "exocivilisations" would arise on planets with initial carbon dioxide levels …
What Is an Exoplanet? – Exoplanet Exploration: Planets Beyond our Solar System
Exoplanets – planets outside our solar system – are everywhere. But why do we study them? What makes them so interesting? At NASA, we're surveying and studying exoplanets to learn all about their weirdness, their variety, and all the fascinating things they can tell us about how planets form and develop.
Most of the exoplanets discovered so far are in a relatively small region of our galaxy, the Milky Way. ("Small" meaning within thousands of light-years of our solar system; one light-year equals 5.88 trillion miles, or 9.46 trillion kilometers.) That is as far as current telescopes have been able to probe. We know from NASA’s Kepler Space Telescope that there are more planets than stars in the galaxy.
Two Strange Planets: Unsolved Magnetic Mystery on Uranus and Neptune
Neptune and Uranus are the outermost two planets of our solar system and two gas giants. Credit: NASA
The two large gas planets Uranus and Neptune have strange magnetic fields. These are each strongly tilted relative to the planet’s rotation axes and are significantly offset from the physical center of the planet. The reason for this has been a longstanding mystery in planetary sciences. Various theories assume that a unique inner structure of these planets could be responsible for this bizarre phenomenon.
A Crescent Moon Skims The Giant Planets During 'International Dark Sky Week': What You Can See In
A crescent moon and the planet Venus set behind an American flag at sunset on July 15, 2018 in ... [+] Bayonne, New Jersey. (Photo by Gary Hershorn/Getty Images)
If you do achieve sufficient darkness then cast your eyes to the southwest after dark to enjoy Orion's Belt while you can. It's now sinking a few hours after darkness falls—and that means it's almost time to say goodbye to the starry skies of winter.
Those who rise early this week should look to the southeastern pre-dawn night sky will see a waning crescent Moon first skim Saturn, then Jupiter against the backdrop of the constellation of Capricorn, the 'sea goat.'
Mars Helicopter Ingenuity snaps 1st color photo on Red Planet | Space
The 4-lb. (1.8 kilograms) chopper, known as Ingenuity, snapped its first color photograph on Saturday (April 3), shortly after being lowered to the Martian dirt by the Perseverance rover .
The car-sized Perseverance landed inside the 28-mile-wide (45 kilometers) Jezero on Feb. 18 with Ingenuity firmly attached to its belly. The rover deployed Ingenuity on Saturday and has since moved a short distance away, allowing the Martian sunlight to reach the solar-powered rotorcraft.
High pCO2 Reduces Sensitivity To CO2 Perturbations On Temperate, Earth-like Planets Throughout
Illustrations of the climate stability as a function of orbital radius within the habitable zone in a solar system with a star identical to the Sun. The yellow star in the center of each panel represents a Sun-like G-type star. The red zone in each panel is the region where Earth-like planets are likely to be in the uninhabitable runaway greenhouse state, extending to 0.95 au. The circular blue dot and ring in each panel represent the Earth's orbit, at a radius of 1 au.
The nearly logarithmic radiative impact of CO2 means that planets near the outer edge of the liquid water habitable zone (HZ) require ∼106x more CO2 to maintain temperatures conducive to standing liquid water on the planetary surface than their counterparts near the inner edge.
Earth's building blocks formed during the solar system's first million years, study finds |
It can also be used as forensic tool to piece together how the earth and solar system must have formed. In two papers , Ciesla and colleagues at California Institute of Technology, the University of Michigan and the University of Minnesota laid out a history of carbon in the formation of the solar system.
Even within our home system, questions still surround the formation of the Earth and our sibling planets. The prevailing theory is that the solar system began as a giant cloud of hot gas and dust that coalesced into the sun; then, gradually, pieces started to clump together into planets as the whole thing cooled down.
China's Mars Probe Just Sent Haunting Photos of The Red Planet
China's Mars probe, Tianwen-1, has been hanging around Mars in a parking orbit for nearly two whole months now , preparing for its rover landing in May.
But it's not just sitting there in orbit twiddling its antennae. The probe is surveying the planet, orbiting closer, checking out the mission's chosen rover landing site - and sending back some amazing images of our dusty planetary friend.
On March 16 and March 18, the spacecraft took two panoramic photographs with its medium-resolution camera of a crescent Mars viewed from its far side, with the Sun behind it, from a distance of about 11,000 kilometers (6,835 miles).
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