Home / Space News Daily / 'Going to the Top of the World to Touch the Sky' to feature in NASA lecture

'Going to the Top of the World to Touch the Sky' to feature in NASA lecture

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The general public is invited to a free lecture known as ‘Going to the Prime of the World to Contact the Sky,’ with Dr. Douglas Rowland, NASA analysis scientist. The speak will happen within the Pickford Theater, third flooring, Madison Constructing, 101 Independence Avenue SE, Library of Congress, Washington, D.C., on Oct. 17 from 11:30 a.m. to 12:30 p.m. EDT.

On daily basis, Earth loses a whole bunch of tons of its ambiance to house due to the affect of the Solar and its photo voltaic wind, in a course of often called “atmospheric escape”. On Earth, atmospheric escape occurs predominantly at excessive latitudes, the place photo voltaic wind-driven vitality streams down into the ambiance to type the aurora. This vitality ionizes, heats, and accelerates the higher ambiance, ejecting a part of it into house.

On planets like Mars, these and comparable processes are thought to have resulted within the virtually whole erosion of a once-dense ambiance. These results will also be crucial in figuring out planetary habitability for different planets round different stars, and Earth gives an accessible pure laboratory for his or her examine.

Right here on Earth, atmospheric escape will not be a risk to life – we now have sufficient ambiance to final billions of years. However the processes by which heavier gases like oxygen are heated and energized stay mysterious: Scientists lengthy thought that oxygen was too heavy to flee Earth’s ambiance, as a result of it must be energized by a hundredfold or extra to realize escape velocity.

Nonetheless, oxygen of Earth origin is commonly noticed in near-Earth house, and, at occasions, it floods this area, dramatically altering the house atmosphere. Discovering out what mechanisms warmth this oxygen and when and the place these heating processes happen are of nice curiosity for predicting “climate” within the house atmosphere.

Dr. Rowland led the VISIONS-2 (VISualizing Ion Outflow through Impartial atom Sensing-2) NASA sounding (suborbital) rocket mission, a part of the multinational Grand Problem Initiative – Cusp undertaking, to instantly measure the auroral vitality inputs and the ensuing atmospheric escape. VISIONS-2 was launched from the one inhabited place on Earth the place the photo voltaic wind has direct entry to the ambiance – Ny Alesund, Norway, the world’s northernmost city.

Dr. Rowland will focus on atmospheric escape and what we’re studying from the VISIONS-2 information, and he’ll share what it was prefer to journey to and work in Ny Alesund, solely 769 miles from the North Pole.

He’s a speaker within the 2019 NASA Goddard Lectures Sequence on the Library of Congress. Earlier talks within the NASA sequence included the subjects of house climate, improved world water safety and sustainability, how Mars has modified over time, NASA’s Hubble Area Telescope and the upcoming James Webb Area Telescope.

The Library of Congress maintains one of many largest and most various collections of scientific and technical info on this planet. The Library of Congress is the nation’s oldest federal cultural establishment and the biggest library on this planet and holds almost 151.eight million objects in varied languages, disciplines and codecs. The Library serves each Congress and the nation on-line and on-site in its studying rooms on Capitol Hill.

For inquiries about this or upcoming talks on the Library of Congress, the general public can contact the library’s Science, Know-how and Enterprise Division at 202-707-5664. ADA lodging ought to be requested 5 enterprise days prematurely at 202-707-6382 (voice/tty) or ada@loc.gov.

The lecture will likely be later broadcast on the library’s webcast web page and YouTube channel “Subjects in Science” playlist.

Associated Hyperlinks

NASA’s VISIONS-2 mission

Earth Observation News – Suppiliers, Technology and Application

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Do animals control earth’s oxygen level

Copenhagen, Denmark (SPX) Sep 11, 2019

Not more than 540 million years in the past there was an enormous increase within the variety of animals on Earth. The primary bigger animals advanced in what’s in the present day often called the Cambrian explosion. Within the time that adopted, the animals advanced and grew bigger, however concurrently with the evolution of the animals, the oxygen degree within the ambiance dropped and this quickly slowed the radiation. Nevertheless, subsequent oxygenation and development of algae added vitality to the meals chain and received the explosion of life going.

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