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Mission Update: SUCCESS! Akatsuki Is In Orbit Around Venus!

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Illustration of Akatsuki in Venus orbit. (Credit: Go Miyazaki)

After some tense moments tonight at JAXA HQ, it has been determined that the spacecraft Akatsuki has performed the necessary thruster burn to establish orbit around Venus! Congratulations Akatsuki and JAXA!

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Japan’s AKATSUKI Will Get a Second Chance at Venus Next Week

Note: this is a repost of an article from Feb. 2015 with a couple of updates.

Illustration of AKATSUKI/Planet-C by Akihiro Ikeshita. (JAXA)

Illustration of AKATSUKI/Planet-C by Akihiro Ikeshita. (JAXA)

If any of you remember it back in Dec. 2010 Japan’s Venus Climate Orbiter spacecraft AKATSUKI (aka Planet-C), after a five and a half month journey through space, failed to enter orbit around Venus due to a faulty thruster nozzle. It sailed right past the cloud-covered planet, going into orbit around the Sun. Fortunately, JAXA mission engineers were able to determine the cause of the problem and come up with some work-arounds for a second — and final — attempt on Monday, Dec. 7.

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Ground-Based Radar Reveals the Surface of Venus

Radar map of Venus' surface made from signals sent from Puerto Rico and received in West Virginia (NRAO)

Radar map of Venus’ surface made from signals sent from Puerto Rico and received in West Virginia (Credits: B. Campbell, Smithsonian, et al., NRAO/AUI/NSF, Arecibo)

These days if you look toward the west after sunset you’ll see a bright star that’s the first to appear in the sky – except it’s not a star at all but our neighboring planet, Venus. Covered in a dense layer of thick clouds, Venus not only reflects a lot of sunlight but also keeps its surface well concealed from visible-light observations. But with the capabilities of powerful ground-based radar observatories, scientists have been able to make global maps of Venus from right here on Earth… no rockets necessary!

Read the rest of my article on Discovery News here.

This Is the First Color Image from the Surface of Venus

Color image data sent from the surface of Venus by the Soviet Venera-13 lander (Credit: NASA history office)

Color image data sent from the surface of Venus by the Soviet Venera-13 lander (Credit: NASA history office)

The surface of Venus is definitely no easy place to which to send a spacecraft. Crushing atmospheric pressures, powerful high-altitude winds amid caustic clouds of sulfuric acid, and temperatures that can soar above 880ºF (475ºC) make the next planet in a no-man’s-land for robotic spacecraft. But those challenges didn’t stop the Soviet space program from successfully putting several craft onto Venus’ surface in the 70s and early 80s, giving us our first views of its kiln-dried landscape.

Venera-3 became the fist spacecraft on the surface of another planet when it impacted Venus on March 1, 1966, but no data was returned. The next year Venera-4 was sent to Venus but was likely crushed by its atmosphere. Venera-7 became the first spacecraft to successfully soft-land on Venus on Dec. 15, 1970, sending back temperature data. Venera-8 landed on July 22, 1970, taking light measurements and confirming suitable levels for imaging. On Oct. 22, 1975, the Venera-9 lander returned the first image data from the surface of Venus before going out of range of the orbiting spacecraft 53 minutes later (and succumbing to harsh surface conditions after that) with Venera-10 landing three days later. Then, on March 1, 1982, Venera-13 landed on Venus, analyzing soil and capturing the first color images from the planet’s surface.

The image above is a section of a larger panorama. See the full image below:

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Three Worlds, One Shot: a February 2015 Conjunction Event

Conjunction of the Moon, Venus, and Mars on Feb. 20, 2015. © Jason Major.

Conjunction of the Moon, Venus, and Mars on Feb. 20, 2015. © Jason Major.

Did you have clear skies last night? If so, you may have been able to catch the sight above: a conjunction of the crescent Moon and the planets Venus and Mars in the western sky!

I captured the photo above with a Nikon D7000 and a Sigma 150-500mm lens. Venus is the brighter object at left, Mars appears dimmer and redder above. Part of the Moon’s “dark side” can be seen due to Earthshine – sunlight reflected off Earth onto the Moon. (Sometimes romantically called “the old Moon in the new Moon’s arms.”)

Although the worlds were only within a degree or two of each other in the sky they were in reality very far apart (obviously). The actual distances from Earth to each at the time of the event? Moon: 363,784 km; Venus: 213 million km; Mars: 329.1 million km.

Check out this and other images in my Flickr gallery here.

AKATSUKI to Get a Second Chance at Venus in December

Illustration of AKATSUKI/Planet-C by Akihiro Ikeshita. (JAXA)

Illustration of AKATSUKI/Planet-C by Akihiro Ikeshita. (JAXA)

If any of you remember this, back in Dec. 2010 Japan’s Venus Climate Orbiter spacecraft AKATSUKI (or Planet-C), after a five and a half month journey through space, failed to enter orbit around Venus due to a faulty thruster nozzle. It sailed right past the cloud-covered planet, going into orbit around the Sun. Fortunately, JAXA mission engineers were able to determine the cause of the problem and come up with some work-arounds for a second attempt when the spacecraft is aligned with Venus later this year.

Read the rest of this entry

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