Schüler starten selbstgebaute Mini-Satelliten


Schüler starten selbstgebaute Mini-Satelliten
01-10-2014 10:02 PM CEST


Der Countdown hat begonnen. Sieben Monate lang haben 52 Schülerinnen und Schüler aus acht Bundesländern Miniatur-Satelliten entwickelt. Der erstmals in Deutschland ausgeschriebene CanSat-Wettbewerb (englisch für Dosen-Satellit) wird vom 6. bis 10. Oktober in Bremen ausgetragen.

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Titan’s swirling polar cloud is cold and toxic


Titan’s swirling polar cloud is cold and toxic
01-10-2014 07:00 PM CEST


The international Cassini mission has revealed that a giant, toxic cloud is hovering over the south pole of Saturn’s largest moon, Titan, after the atmosphere has cooled in a dramatic fashion.

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News Release: EPA Requires Mercedes-Benz to Correct Fuel Economy Labels for Two C300 4-Matic Vehicles

Christie St. Clair (News Media only)
(202) 564-2880


October 1, 2014

EPA Requires Mercedes-Benz to Correct Fuel Economy Labels for Two C300 4-Matic Vehicles

– The U.S. Environmental Protection Agency (EPA) is revising estimates for two 2013/2014 Mercedes C300 4-matic vehicles, the FFV and PZEV, to ensure consumers are given accurate fuel economy values.

During EPA fuel economy audit testing, the Mercedes C300 4-matic was found to have values that differed from those submitted to EPA at the time of certification. With EPA oversight, Mercedes conducted new emissions and fuel economy testing, and EPA conducted its own testing at its National Vehicle and Fuel Emissions Laboratory in Ann Arbor, Michigan. As a result of this subsequent testing, EPA is requiring Mercedes to relabel its 2013 and 2014 C300 4-matic models with lower fuel economy values.

The specific changes to fuel economy stickers are listed in the table below.

Mercedes Fuel Economy Value Updates

Model C300 4-Matic FFV C300 4-Matic PZEV
Combined (mpg) City (mpg) Highway (mpg) Combined
City (mpg) Highway (mpg)
Original Values 22 20 27 23 20 29
New Values 22 19 27 22 19 28

“Even though the adjustments are small, it is important that our oversight system is producing the correct results because even one MPG matters to consumers,” said Christopher Grundler, director of EPA’s Office of Transportation and Air Quality. “EPA will continue strong oversight of fuel economy values to ensure that consumers have the best information available to make important purchasing decisions, to ensure fair competition among automakers, and to protect investments in new fuel efficient technologies.

The original values reported by Mercedes underestimated the impact of aerodynamic drag and tire rolling resistance known as “road-load.” While this error impacted the fuel economy estimates by a small amount, these vehicles were found to be in compliance with emissions standards. EPA also tested several other Mercedes as part of this spot check, and found their labeling was accurate.

EPA’s National Vehicle and Fuel Emissions Laboratory in Ann Arbor, Michigan, conducts fuel economy testing on a number of vehicles each year to ensure that their performance matches the mileage and emissions data automakers submit to EPA. These spot-checks are part of the oversight program that helps ensure that carmakers are following the same procedures for calculating mileage estimates. The oversight program also helps the EPA verify that vehicles on the road meet national tailpipe emission standards to protect public health and the environment.

More information on today’s update:

Updated fuel economy values are also available on the joint EPA and the Department of Energy website: mailing list memberships reminder


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European Space Agency YouTube Update


30-09-2014 07:37 PM CEST

This timelapse video from space has it all: an orbit of Earth with lightning and aurora, followed by a space sunrise and daytime views of our cloudy planet. The images were taken by ESA astronaut Alexander Gerst as he orbited Earth on the International Space Station at around 400 km altitude. The nighttime video shows a Soyuz spacecraft that ferries the astronauts to the outpost. At the end of the video green aurora can be seen as Earth’s interacts with solar radiation.

The International Space Station travels at 28 800 km/h meaning that it only takes 90 minutes to circle Earth completely. Each orbit the Station moves around 2200 km to the West in relation to 90 minutes before.

Astronauts often use normal consumer digital cameras to take pictures of Earth through Europe’s observatory module Cupola in their spare time. Setting the camera to take an image every few seconds and then playing the images back quickly create this timelapse effect.

Alexander worked as a geophysicist and volcanologist before he was chosen as an ESA astronaut in 2009. His Blue Dot mission includes an extensive scientific programme of experiments in physical science, biology, and human physiology as well as radiation research and technology demonstrations. All experiments chosen make use of the out-of-this-world laboratory to improve life on Earth or prepare for further human exploration of our Solar System.

From: European Space Agency, ESA
Views: 276

46 ratings
Time: 01:03 More in Science & Technology

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European Space Agency Flickr Update


42 is the answer
30-09-2014 12:49 PM CEST

europeanspaceagency posted a photo:

42 is the answer

Expedition 42 crewmembers, from left: Russian cosmonaut Elena Serova, NASA commander Barry Wilmore, cosmonauts Alexander Samoukutyaev, Anton Shkaplerov, NASA astronaut Terry Virts and ESA astronaut Samantha Cristoforetti.

Alexander, Elena and Barry left Earth on 25 September from Baikonur cosmodrome in Kazakhstan, the other trio will follow on 23 November.

Each three-person crew will spend around six months on the International Space Station. Samantha’s mission is named Futura after a competition was run in her home country, Italy.

Follow Samantha via

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New toolboxes make using Sentinel data easy


New toolboxes make using Sentinel data easy
30-09-2014 04:20 PM CEST


The Sentinel satellites are built primarily to deliver information for environmental services through Europe’s Copernicus programme, but they will also be used to advance our scientific understanding of Earth. Paving the way for easy scientific exploitation, ESA has released three new open source scientific software toolboxes.

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News Release: EPA Releases Greenhouse Gas Emissions Data from Large Facilities

Enesta Jones



September 30, 2014

EPA Releases Greenhouse Gas Emissions Data from Large Facilities

WASHINGTON – Today, the U.S. Environmental Protection Agency (EPA) released its fourth year of Greenhouse Gas Reporting Program data, detailing greenhouse gas pollution trends and emissions broken down by industrial sector, geographic region and individual facilities. In 2013, reported emissions from large industrial facilities were 20 million metric tons higher than the prior year, or 0.6 percent, driven largely by an increase in coal use for power generation.

“Climate change, fueled by greenhouse gas pollution, is threatening our health, our economy, and our way of life—increasing our risks from intense extreme weather, air pollution, drought and disease,” said EPA Administrator Gina McCarthy. “EPA is supporting the President’s Climate Action Plan by providing high-quality greenhouse gas data to inform effective climate action.”

The Greenhouse Gas Reporting Program is the only program that collects facility-level greenhouse gas data from major industrial sources across the United States, including power plants, oil and gas production and refining, iron and steel mills and landfills. The program also collects data on the increasing production and consumption of hydrofluorocarbons (HFCs) predominantly used in refrigeration and air conditioning.

Over 8,000 large-emitters reported direct greenhouse gas emissions to the program in 2013, representing approximately 50 percent of total U.S. emissions. The data from these facilities show that in 2013:

  • Power plants remained the largest source of U.S. greenhouse gas emissions, with over 1,550 facilities emitting over 2 billion metric tons of carbon dioxide, roughly 32 percent of total U.S. greenhouse gas pollution. Power plant emissions have declined by 9.8 percent since 2010, but there was an uptick in emissions of 13 million metric tons in 2013 due to an increased use of coal.
  • Petroleum and natural gas systems were the second largest stationary source, reporting 224 million metric tons of greenhouse gas emissions, a decrease of 1 percent from the previous year.
    • Reported methane emissions from petroleum and natural gas systems sector have decreased by 12 percent since 2011, with the largest reductions coming from hydraulically fractured natural gas wells, which have decreased by 73 percent during that period. EPA expects to see further emission reductions as the agency’s 2012 standards for the oil and gas industry become fully implemented.
  • Refineries were the third largest stationary source, reporting 177 million metric tons of greenhouse gas emissions, up 1.6 percent from the previous year.
  • Reported emissions from other large sources in the industrial and waste sectors increased by 7 million metric tons of greenhouse gas pollution, up 1 percent from 2012.

Under President Obama’s Climate Action Plan, EPA is taking steps to address carbon pollution from the power and transportation sectors, and to improve energy efficiency in homes, businesses and factories. Under EPA’s proposed Clean Power Plan, carbon emissions from the power sector would decrease by 30 percent below 2005 levels and electricity bills would shrink by 8 percent by 2030. EPA’s pollution standards for cars and light trucks for model years 2012-2025 will save Americans more than $1.7 trillion at the pump. In addition, the agency’s partnerships with industry have prevented more than 365 million metric tons of greenhouse gas pollution, equal to the annual electricity use of more than 50 million homes.

EPA will be holding information webinars today and Thursday to demonstrate the greenhouse gas data publication tool, FLIGHT, highlight new features added this year, and provide a tutorial on common searches. FLIGHT allows users to view top emitters in a state or regions; see emissions data from a specific industry; track emissions trends by facility or region; and download maps, list and charts.

See key facts and figures and explore Greenhouse Gas Reporting Program Data:

Register for FLIGHT webinars:

September 30, 1 p.m. EDT

October 2, 3 p.m. EDT

More information about climate change:


Klima-Informationen aus dem Weltall für Entscheider auf der Erde


Klima-Informationen aus dem Weltall für Entscheider auf der Erde
30-09-2014 11:13 AM CEST


Das internationale Symposium in Darmstadt beleuchtet vom 13. bis 17. Oktober die Beobachtung unseres Klimas mit Erdsatelliten. ESA Experten aus der Programmdirektion Erd- und Umweltbeobachtung nehmen daran teil.

Beobachtungen der Erde mit Satelliten sind das zentrale Schlüsselelement für die weiträumige Erfassung unseres Klimasystems.

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