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Latest Heliosphere Stories

3520a7f9d58d7342b6196f7f3cbe9af71
2009-10-16 07:20:00

Images from the Ion and Neutral Camera on NASA's Cassini spacecraft suggest that the heliosphere, the region of the sun's influence, may not have the comet-like shape predicted by existing models.

d8dc3be4ef6387e16b81e543c71e4fa21
2009-10-16 06:50:00

NASA's Interstellar Boundary Explorer, or IBEX, spacecraft has made it possible for scientists to construct the first comprehensive sky map of our solar system and its location in the Milky Way galaxy.

2009-10-15 13:00:00

Nearly a year ago - on October 19, 2008 - the Interstellar Boundary Explorer (IBEX) - a NASA Small Explorer Mission - was launched into Earth orbit to discover the global interaction between the solar wind and the interstellar medium - the gas, dust and radiation environment between the stars - by measuring the neutral atoms created by that interaction.

15c842b0d10c5385117cae9b262d29721
2009-09-29 12:30:00

Planning a trip to Mars? Take plenty of shielding. According to sensors on NASA's ACE (Advanced Composition Explorer) spacecraft, galactic cosmic rays have just hit a Space Age high.

8f3b249666423d1690b56347121c5da71
2009-06-30 14:00:00

Scientists said goodbye to the Ulysses solar probe on Tuesday, following 18 years of activity.

e95763297b0d0932438f15ef40204c1a1
2009-06-18 11:26:26

NASA's Interstellar Boundary Explorer (IBEX) spacecraft has made the first observations of very fast hydrogen atoms coming from the moon, following decades of speculation and searching for their existence.

f4b7c192b199f60b7e5594ab38e83daf1
2008-10-20 14:45:00

NASA is sending a small spacecraft on a two-year mission that will give scientists their first view of the outermost reaches of our solar system.

b4c69cd33c26b7382c9c50ea598ce641
2008-10-06 13:35:00

The first NASA spacecraft to image and map the dynamic interactions taking place where the hot solar wind slams into the cold expanse of space is ready for launch Oct. 19. The two-year mission will begin from the Kwajalein Atoll, a part of the Marshall Islands in the Pacific Ocean.

e62e932288776ae6bbe89b2ff278508a1
2008-09-23 15:05:00

Data from the Ulysses spacecraft, a joint NASA-European Space Agency mission, show the sun has reduced its output of solar wind to the lowest levels since accurate readings became available. The sun's current state could reduce the natural shielding that envelops our solar system.

2c471b990a155b1091cd694e105d53fb1
2008-07-28 08:50:00

Just as an impressionist artist makes an image from countless tiny strokes of paint, NASA’s new Interstellar Boundary Explorer (IBEX) spacecraft will build up an image of the termination shock and areas beyond by using hits from high-speed atoms that are radiating out of this region.


Latest Heliosphere Reference Libraries

6_02132514ceb20be8f009384c891c09472
2004-10-19 04:45:41

Heliopause -- The heliopause is the boundary where our Sun's solar wind is stopped by the interstellar medium. The solar wind blows a "bubble" in the interstellar medium (the rareified hydrogen and helium gas that permeates the galaxy). The point where the solar wind's strength is no longer great enough to push back the interstellar medium is known as the heliopause, and is often considered to be the outer "border" of the solar system. The distance to the heliopause is not precisely...

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Word of the Day
ethnarch
  • The governor of a province or people.
The word 'ethnarch' comes from a Greek word meaning 'ruler of a tribe or nation'.
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