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What’s Up October 2017

What’s Up For October? 

Planet Pairs, Stellar Superstars, Observe The Moon Night!!

This month, catch planet pairs, our moon near red stars, an asteroid, meteors and International Observe the Moon Night!

You can’t miss bright Venus in the predawn sky. Look for fainter Mars below Venus on the 1st, really close on the 5th, and above Venus after that.

Midmonth, the moon is visible near Regulus, the white starry heart of the constellation Leo.

In the October 8-11 predawn sky watch the moon glide near the Pleiades star cluster and pass near the red stars Aldebaran in the constellation Taurus and Betelgeuse in Orion.

After dusk in the early part of the month look for Saturn in the southwest sky above another red star: Antares in Scorpius. Later in the month, find the moon above Antares October 22 and 23.

Saturn will be above the moon on the 23rd and below it on the 24th.

Uranus reach opposition on October 19th. It’s visible all night long and its blue-green color is unmistakeable. It may be bright enough to see with your naked eye–and for sure in binoculars.

The Orionids peak on October 20–a dark, moonless night. Look near Orion’s club in the hours before dawn and you may see up to 10 to 15 meteors per hour.

Use binoculars to look for bright asteroid 7 Iris in the constellation Aries. Newbies to astronomy should be able to spot this magnitude 6.9 asteroid - even from the city. 

Look later in the month and sketch its positions a day or two apart–to see it move.

Finally, celebrate International Observe the Moon Night on October 28 with your local astronomy club, Solar System Ambassador, museum, or planetarium. The first quarter moon that night will display some great features!

Watch the full What’s Up for October Video: 

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Parker Solar Probe and the Birth of the Solar Wind

This summer, humanity embarks on its first mission to touch the Sun: A spacecraft will be launched into the Sun’s outer atmosphere. Facing several-million-degree Fahrenheit temperatures, NASA’s Parker Solar Probe will directly sample solar particles and magnetic fields to resolve some of the most important questions in solar science.

This summer, humanity embarks on its first mission to touch the Sun: A spacecraft will be launched into the Sun’s outer atmosphere. Facing several-million-degree Fahrenheit temperatures, NASA’s Parker Solar Probe will directly sample solar particles and magnetic fields to resolve some of the most important questions in solar science.

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Carbon and Our Changing Climate

Carbon is the backbone of life on Earth. We are made of carbon, we eat carbon and our civilizations are built on carbon. We need carbon, but that need is also entwined with one of the most serious problems facing us today: global climate change.

Forged in the heart of aging stars, carbon is the fourth most abundant element in the Universe. Most of Earth’s carbon – about 65,500 billion metric tons – is stored in rocks. The rest is in the ocean, atmosphere, plants, soil and fossil fuels.

Over the long term, the carbon cycle seems to maintain a balance that prevents all of Earth’s carbon from entering the atmosphere, or from being stored entirely in rocks. This balance helps keep Earth’s temperature relatively stable, like a thermostat.

Today, changes in the carbon cycle are happening because of people. We disrupt the cycle by burning fossil fuels and clearing land. Our Orbiting Carbon Observatory-2 (OCO-2) satellite is providing our first detailed, global measurements of CO2 in the atmosphere at the Earth’s surface. OCO-2 recently released its first full year of data, critical to analyzing the annual CO2 concentrations in the atmosphere.

The above animation shows carbon dioxide released from two different sources: fires and massive urban centers known as megacities. The animation covers a five day period in June 2006. The model is based on real emission data and is then set to run so that scientists can observe how greenhouse gas behaves once it has been emitted.

All of this extra carbon needs to go somewhere. So far, land plants and the ocean have taken up about 55 percent of the extra carbon people have put into the atmosphere while about 45 percent has stayed in the atmosphere. The below animation shows the average 12-month cycle of all plant life on Earth (on land and in the ocean). Eventually, the land and oceans will take up most of the extra carbon dioxide, but as much as 20 percent may remain in the atmosphere for many thousands of years.

Excess carbon in the atmosphere warms the planet and helps plants on land grow more. Excess carbon in the ocean makes the water more acidic, putting marine life in danger. Forest and other land ecosystems are also changing in response to a warmer world. Some ecosystems – such as thawing permafrost in the Arctic and fire-prone forests – could begin emitting more carbon than they currently absorb. 

To learn more about NASA’s efforts to better understand the carbon and climate challenge, visit: http://www.nasa.gov/carbonclimate/.

Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com

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