News / USA

Stardust Seeks Comet for Valentine's Day Rendezvous

This image provided by NASA shows comet Tempel 1 at the moment of impact with NASA's Deep Impact probe as it smashed into its surface. The probe crashed between the two dark-rimmed craters near the center and bottom of the comet (File Photo - July 4, 2005
This image provided by NASA shows comet Tempel 1 at the moment of impact with NASA's Deep Impact probe as it smashed into its surface. The probe crashed between the two dark-rimmed craters near the center and bottom of the comet (File Photo - July 4, 2005

Ever run into an old flame a few years after you last saw one another and think that he or she looks pretty different, maybe that time or sun exposure have taken their toll? Now, for the first time, scientists are planning to follow up with a different body - a comet - to see how its looks have changed over the years.

NASA's Stardust-NExT spacecraft has a date with a comet called Tempel 1 on the night of February 14th, which happens to be Valentine's Day. During that rendezvous, with only 200 kilometers between them, the Stardust craft will snap 72 high-resolution pictures of Tempel 1.

And this is one comet that is used to being in front of the camera.  A NASA mission called Deep Impact took photographs of Tempel 1 about six years ago, on the comet's last orbit of the Sun.

Joe Veverka, the principal investigator of the Stardust-NExT mission, told reporters at a NASA mission preview briefing last month that this will be the first opportunity to see how a comet changes between two close passages to the sun.

"We know that comets lose material, but the question is, 'how much does the surface change and where does the surface change?' So we will be able to answer that question by comparing our images with those taken by Deep Impact in 2005," said Veverka.

During the Deep Impact mission, scientists actually crashed a probe into Tempel 1 and gathered the material it kicked up in order to study the comet's composition.

Scientists at the NASA briefing said that it will be a bonus if the Stardust spacecraft is able to capture an image of the crater created in that crash.

NASA says it is important to study comets because astronomers theorize they are part of a collection of gas, ice, rocks and dust that formed the outer planets of our solar system about 4.5-billion years ago.

Steve Chesley, a Stardust-NExT co-investigator, made it sound a bit sexier.

"Comets are not just inert, simple objects floating out in space," said Chesley. "They are dynamic. They are active. They are much more like a rocket with no one at the controls than something that is just idling there."

Sounds like a hot Valentine's date.

Tempel-1's orbit brings it as close to the sun as the orbit of the planet Mars, and as far from the sun as the orbit of the planet Jupiter. NASA says data from this upcoming mission could help explain the way the Jupiter-family comets formed.

And this mission is expected to be the grand finale for the Stardust spacecraft, which was part of a mission in 2004 that collected particles directly from yet another comet.

The Stardust craft has been in space since 1999, and it is nearly out of fuel after traveling about six billion kilometers.

You May Like

Sydney Hostage-taker Failed to Manipulate Social Media

Gunman forced captives to use personal Facebook, YouTube accounts to issue his demands; online community helped flag messages, urged others not to share them More

UN Seeks $8.4 Billion to Help War-Hit Syrians

Effort aimed at helping Syrians displaced within their own country and those who've fled to neighboring ones More

Who Are the Pakistani Taliban?

It's an umbrella group of militant organizations whose objective is enforcement of Sharia in Pakistan 'whether through peace or war' More

This forum has been closed.
Comments
     
There are no comments in this forum. Be first and add one

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Will Pakistan School Shooting Galvanize Pakistan Against Extremism?i
X
Ayesha Tanzeem
December 17, 2014 11:54 AM
The attack on a military school in Pakistan’s northwest city of Peshawar left 141 dead, including 132 children. Strong statements of condemnation poured in from across the world. The country announced three days of mourning, and the leadership, both political and military, promised retribution. VOA's Ayesha Tanzeem looks at how likely the Pakistani government is to clamp down on all extremist groups.
Video

Video Will Pakistan School Shooting Galvanize Pakistan Against Extremism?

The attack on a military school in Pakistan’s northwest city of Peshawar left 141 dead, including 132 children. Strong statements of condemnation poured in from across the world. The country announced three days of mourning, and the leadership, both political and military, promised retribution. VOA's Ayesha Tanzeem looks at how likely the Pakistani government is to clamp down on all extremist groups.
Video

Video ‘Anti-Islamization’ Marches Increase Tensions In Germany

Anti-immigrant rallies in Germany have been building in recent weeks, peaking Monday night in the city of Dresden where tens of thousands of people turned out to demonstrate against what they call the ‘Islamization’ of the West. Germany has offered asylum to more Syrian refugees than any other country, and this appears to have set off the protests. Henry Ridgwell reports from London.
Video

Video Aceh Rebuilt Decade After Tsunami, But Scars Remain

On December 26, 2004 there was an earthquake in the Indian Ocean so powerful it caused the Earth’s axis to wobble a few centimeters. Onshore on the island of Sumatra, the resulting tsunami was devastating. A decade later, VOA Correspondent Steve Herman reports from Banda Aceh, Indonesia, where although there is little remaining evidence of the physical devastation, the psychological scars among survivors remain.
Video

Video Refugees Living in Kenya Long for Peace in the Home Countries

Kenya is host to numerous refugees seeking safe haven from conflict. Immigrants from Somalia face challenges in their new lives in Kenya. Ahead of International Migrants Day (December 18) Lenny Ruvaga has more for VOA News from the Kenyan capital.
Video

Video Turkey's Authoritarianism Dismays Western Allies

The Turkish government has been defiant in the face of criticism at home and abroad for its raids targeting opposition media. The European Union on Monday expressed dismay after President Recep Tayyip Erdogan lashed out at Brussels for criticizing his government's action. Turkey's bid to be considered for EU membership has been on hold while critics accuse the NATO ally of increasingly authoritarian rule. Zlatica Hoke reports.
Video

Video US-China Year in Review: Hong Kong to Climate Change

The United States is pushing for a code of conduct to resolve territorial disputes in the South China Sea as it works to improve commercial ties with Beijing. VOA State Department correspondent Scott Stearns reports on a year of U.S. policy toward China from Hong Kong to climate change.
Video

Video Japanese Leader’s Election Win Raises Potential for Conflict with Neighbors

Japan’s Prime Minister Shinzo Abe and his allies easily won a two-thirds majority in parliament Sunday, even though the country has slipped into recession under his conservative policies. VOA’s Brian Padden reports from Seoul, that the prime minister’s victory will empower him to continue economic reforms but also pursue a nationalist agenda that will likely increase tensions with Japan’s neighbors.
Video

Video Nuba Mountain Families Hide in Caves to Escape Aerial Bombings

Despite ongoing peace talks between Sudan's government and the rebel Sudan People’s Liberation Movement-North, or SPLM-N, daily aerial attacks continue in South Kordofan province’s Nuba Mountains. Adam Bailes was there and reports for VOA that government forces are targeting civilian areas, rather than military positions, with their daily bombardments.

All About America

AppleAndroid