Tag Archives: Europa

Free Astronomy Magazine – January-February 2019 Issue Available For Reading And Download

Jan/Feb 2019 Cover

Greetings, fellow astrophiles!

The most recent issue of Free Astronomy Magazine (November-December 2018) is available for your reading and downloading pleasure at www.astropublishing.com (click the link to go directly to the issue).

Free Astronomy Magazine (website, facebook) was featured as the first of a series of articles on great free online content for amateur astronomers (see A Universe Of Free Resources Part 1) and we’ll be keeping track of future publications under the Online Resources category on the CNYO website.

You can find previous Free Astronomy Magazine issues by checking out our Free Astronomy Magazine Category (or look under the Education link in our menu).

For those wanting a quick look at what the issue has to offer, the Table of Contents is reproduced below.


January-February 2019

The web browser-readable version of the issue can be found here:

January-February 2019 – www.astropublishing.com/1FAM2019/

For those who want to jump right to the PDF download (15 MB), Click here:

January-February 2019

NASA Space Place – Snowy Worlds Beyond Earth

Poster’s Note: One of the many under-appreciated aspects of NASA is the extent to which it publishes quality science content for children and Ph.D.’s alike. NASA Space Place has been providing general audience articles for quite some time that are freely available for download and republishing. Your tax dollars help promote science! The following article was provided for reprinting in December, 2017.

The Space Place article format has changed recently, including more embedded images. To simplify the posting process, a PDF version of the article is provided below, with a snippet of the article reproduced below it.

Download as PDF: Snowy Worlds Beyond Earth

By Linda Hermans-Killiam

2013february2_spaceplace

There are many places on Earth where it snows, but did you know it snows on other worlds, too? Here are just a few of the places where you might find snow beyond Earth:

A Moon of Saturn: Enceladus

Saturn’s moon, Enceladus, has geysers that shoot water vapor out into space. There it freezes and falls back to the surface as snow. Some of the ice also escapes Enceladus to become part of Saturn’s rings. The water vapor comes from a heated ocean which lies beneath the moon’s icy surface. (Jupiter’s moon Europa is also an icy world with a liquid ocean below the frozen surface.) All of this ice and snow make Enceladus one of the brightest objects in our solar system.

Caption: Enceladus as viewed from NASA’s Cassini spacecraft. Credit: NASA

Want to learn more about weather on other planets? Check out NASA Space Place: spaceplace.nasa.gov/planet-weather

This article was provided by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.

About NASA Space Place

With articles, activities, crafts, games, and lesson plans, NASA Space Place encourages everyone to get excited about science and technology. Visit spaceplace.nasa.gov (facebook|twitter) to explore space and Earth science!

NASA News Digest: Space Science For 12 June – 23 July 2015

Greetings fellow astrophiles,

The NASA News service provides up-to-date announcements of NASA policy, news events, and space science. A recent selection of space science articles are provided below, including direct links to the full announcements. Those interested in receiving these news announcements directly from NASA can subscribe to their service by sending an email to:

hqnews-request@newsletters.nasa.gov?subject=subscribe

NASA Prepares For First Interplanetary CubeSats On Agency’s Next Mission To Mars

RELEASE 15-122 (Click here for the full article) – 12 June 2015

2015june29_15_122aWhen NASA launches its next mission on the journey to Mars – a stationary lander in 2016 – the flight will include two CubeSats. This will be the first time CubeSats have flown in deep space. If this flyby demonstration is successful, the technology will provide NASA the ability to quickly transmit status information about the main spacecraft after it lands on Mars.

The twin communications-relay CubeSats, being built by NASA’s Jet Propulsion Laboratory (JPL), Pasadena, California, constitute a technology demonstration called Mars Cube One (MarCO). CubeSats are a class of spacecraft based on a standardized small size and modular use of off-the-shelf technologies. Many have been made by university students, and dozens have been launched into Earth orbit using extra payload mass available on launches of larger spacecraft.

The basic CubeSat unit is a box roughly 4 inches (10 centimeters) square. Larger CubeSats are multiples of that unit. MarCO’s design is a six-unit CubeSat – about the size of a briefcase — with a stowed size of about 14.4 inches (36.6 centimeters) by 9.5 inches (24.3 centimeters) by 4.6 inches (11.8 centimeters).

For information about MarCO, visit: www.jpl.nasa.gov/cubesat/missions/marco

For information about InSight, visit: www.nasa.gov/insight

Learn more about NASA’s journey to Mars at: www.nasa.gov/content/journey-to-mars-overview

NASA, UN Photo Competition Highlights Why Space Matters On Earth

RELEASE 15-129 (Click here for the full article) – 16 June 2015

2015june29_unoosaclip2NASA and the United Nations Office for Outer Space Affairs (UNOOSA) have launched a global photography competition to highlight how the vantage point of space helps us better understand our home planet, improve lives, and safeguard our future by aiding sustainable development on Earth.

To highlight the role of space-based science and technologies and their applications on Earth, NASA and UNOOSA are inviting the public to submit photos depicting why space matters to us all in our daily lives. To participate, post a picture and description on Instagram using the hashtag #whyspacematters and tagging @UNOOSA.

NASA astronaut Scott Kelly, who is three months into a one-year mission aboard the International Space Station, will announce the winning photo each month by posting it from his Instagram account @StationCDRKelly.

For more information about the International Space Station and its crews and research, visit: www.nasa.gov/station

All Systems Go For NASA’s Mission To Jupiter Moon Europa

RELEASE 15-130 (Click here for the full article) – 17 June 2015

Beyond Earth, Jupiter’s moon Europa is considered one of the most promising places in the solar system to search for signs of present-day life, and a new NASA mission to explore this potential is moving forward from concept review to development.

NASA’s mission concept — to conduct a detailed survey of Europa and investigate its habitability — has successfully completed its first major review by the agency and now is entering the development phase known as formulation.

“Today we’re taking an exciting step from concept to mission, in our quest to find signs of life beyond Earth,” said John Grunsfeld, associate administrator for NASA’s Science Mission Directorate in Washington. “Observations of Europa have provided us with tantalizing clues over the last two decades, and the time has come to seek answers to one of humanity’s most profound questions.”

NASA’s Galileo mission to Jupiter in the late 1990s produced strong evidence that Europa, about the size of Earth’s moon, has an ocean beneath its frozen crust. If proven to exist, this global ocean could hold more than twice as much water as Earth. With abundant salt water, a rocky sea floor, and the energy and chemistry provided by tidal heating, Europa may have the ingredients needed to support simple organisms.

For more information about NASA’s mission to Europa, visit: www.nasa.gov/europa

Veteran NASA Spacecraft Nears 60,000th Lap Around Mars, No Pit Stops

RELEASE 15-134 (Click here for the full article) – 19 June 2015

2015june29_15_134a_smNASA’s Mars Odyssey spacecraft will reach a major milestone June 23, when it completes its 60,000th orbit since arriving at the Red Planet in 2001.

Named after the bestselling novel “2001: A Space Odyssey” by Arthur C. Clarke, Odyssey began orbiting Mars almost 14 years ago, on Oct. 23, 2001. On Dec. 15, 2010, it became the longest-operating spacecraft ever sent to Mars, and continues to hold that record today.

Odyssey, which discovered widespread water ice just beneath the surface of the Red Planet, is still going strong today, serving as a key communications relay for NASA’s Mars rovers and making continued contributions to planetary science.

For more information about Odyssey, visit: mars.jpl.nasa.gov/odyssey

NASA’s Chandra Captures X-Ray Echoes Pinpointing Distant Neutron Star

RELEASE 15-137 (Click here for the full article) – 23 June 2015

2015june29_15_137Astronomers using NASA’s Chandra X-ray Observatory have discovered the largest and brightest set of rings from X-ray light echoes ever observed. These extraordinary rings, produced by an intense flare from a neutron star, provide astronomers a rare chance to determine how far across the Milky Way galaxy the star is from Earth.

The rings appear as circles around Circinus X-1, a double star system in the plane of our galaxy containing a neutron star, the dense remnant of a massive star pulverized in a supernova explosion. The neutron star is in orbit with another massive star, and is shrouded by thick clouds of interstellar gas and dust. Circinus X-1 is also the source of a surprisingly powerful jet of high-energy particles.

“It’s really hard to get accurate distance measurements in astronomy and we only have a handful of methods,” said Sebastian Heinz of the University of Wisconsin in Madison, who led the study. “But just as bats use sonar to triangulate their location, we can use the X-rays from Circinus X-1 to figure out exactly where it is.”

For more Chandra images, multimedia and related materials, visit: www.nasa.gov/chandra

For an interactive image, podcast, and video about these findings, visit: chandra.si.edu