Sentences with phrase «planetary scientists think»

Planetary scientists think that our relatively big Moon, and the axis tilt itself, were created by enormous collisions Earth experienced early in its formation 4.5 billion years ago.

That's a hypothesized storm of comets and (in the inner solar system) asteroids that many planetary scientists think pummeled the solar system 3.9 billion years ago.

Planetary scientists think magnetic fields are produced by the churning of a planet's molten iron core.

Not exact matches

«There's a perception that Venus is a very difficult place to have a mission,» says planetary scientist Darby Dyar of Mount Holyoke College in South Hadley, Mass. «Everybody knows about the high pressures and temperatures on Venus, so people think we don't have technology to survive that.

Many planetary scientists had thought Venus's surface was geologically dead.

Scientists think a dynamo — a rotating, convecting, electrically conducting fluid in a planet's outer core — is the mechanism for generating the planetary magnetic fields.

That makes now the best time for scientists, legal experts and the public to start thinking about when and how we might relax planetary protection protocols if we decide another planet is lifeless, he says.

But in a recent paper with co-authors Dorian Abbot and Eliza Kempton in the Astrophysical Journal Letters, Bean describes the need «to think about the techniques and approaches of astronomy in this game — not as planetary scientists studying exoplanets.»

«I think we're at our best when climate scientists connect the impacts of [climate change] to our personal lives, to our economy, to our families, to our communities,» Hill is an associate professor of earth and planetary sciences at the University of California, Davis.

We tend to think that objects in the sky have always been the way we view them, but in this case the face that is so familiar to us — the Man on the Moon — changed,» said Siegler, who also is a scientist at the Planetary Science Institute, Tucson, Ariz..

It has collected five of the 18 specimens identified as coming from Mars, including the specimen ALH84001, collected in 1984 and made famous in 1996 when NASA investigators suggested that secondary materials in the cracks of the meteorite might have been created through processes involving life — although most planetary scientists now think otherwise.

«I think it's a cool idea and it's definitely worth checking it out in more detail,» says Adam Showman, a planetary scientist at the University of Arizona, Tucson.

«I think long - term, after Mars, Titan's probably the next most important place that people will have an extended presence,» says Ralph Lorenz, a planetary scientist at Johns Hopkins University in Maryland.

«We're realizing that the early moon was a much more dynamic place than we thought,» says Jeffrey Andrews - Hanna, a planetary scientist at the Colorado School of Mines in Golden and lead author of a new study of the Procellarum's geology.

«It's a story that's not implausible, but I also think it's not needed,» said planetary scientist Konstantin Batygin of the California Institute of Technology (Caltech) here, who wasn't part of the recent discovery.

Thinking small has enabled an international team of scientists to gain new insight into the evolution of planetary building blocks in the early solar system.

«I think they're absolutely on the right track,» says William McKinnon, a planetary scientist at Washington University in St. Louis.

«I think it's a very compelling argument, especially with the two papers together,» says Linda Spilker, a planetary scientist and Cassini project scientist at the NASA Jet Propulsion Laboratory in Pasadena, Calif., who also did not contribute to the new studies.

By modeling the ingredients in these carbon - based planetary systems, the scientists determined they lack icy water reservoirs thought to supply planets with oceans.

«I think fighting it is doing more damage to our reputation than anything,» says Harold Levison, a planetary scientist at the Southwest Research Institute in Boulder, Colo..

«We can think about follow - up missions across the outer solar system, Mars sample return, even missions to Venus or Mercury,» says planetary scientist Alan Stern of the Southwest Research Institute in Boulder, Colorado, who was also an independent consultant for SpaceX between 2010 and 2012.

«Usually when you think of two objects colliding, one of them leaves a big hole,» says Erik Asphaug, a planetary scientist at the University of California, Santa Cruz, who co-authored the new study with Martin Jutzi of the University of Bern in Switzerland.

«We think this huge thunderstorm is driving these cloud particles upward, sort of like a volcano bringing up material from the depths and making it visible from outside the atmosphere,» explains Sromovsky, a senior scientist at UW - Madison and an expert on planetary atmospheres.

Some planetary scientists still dispute Pluto's planet status, and Stern says he'll always think of Pluto as a planet.

Regardless of whether you think of Pluto as a planet or not — that debate is still raging among planetary scientists and celebrities alike — the New Horizons flyby was a historic moment for solar system exploration, and it deserved every bit of attention it got.

She is a planetary scientist at Mount Holyoke College in South Hadley, Mass. «Everybody knows about the high pressures and temperatures on Venus, so people think we don't have technology to survive that.

I think the work of Johan Rockstrom and the other 70 scientists in defining nine planetary boundaries will and should help ensure we can be more preventive and precautionary.