Curiosity: Update 2 – Images and Voices

Mount Sharp, Gale Crater, Mars

On August 27, 2012, the Mars Rover Curiosity beamed back images of Gale Crater’s 3-mile high Mount Sharp, whose layered terrain may reveal further details of Mars’ geological history. Curiosity will eventually travel to Mount Sharp to analyze its rocks by collecting samples. Curiosity also broadcasted a voice recording of NASA administrator Charles Bodin congratulating the Mars Rover team on the successful August 5 landing. In the recording, Bodin said: “This is an extraordinary achievement. Landing a rover on Mars is not easy. Others have tried; only America has fully succeeded.” Mars’ Sample Analysis at Mars instrument (SAM), which passed tests, is in working order and will digest and analyze rocks. In addition, Curiosity will drive to depressions on Mars’ surface where the spacecraft’s landing engines left their mark. These holes will allow Curiosity to image Mars’ interior without drilling. In the next few days, Curiosity will head over 1,300 feet to its first drilling target, Glenelg.

On August 28, 2012, Curiosity transmitted to Earth (JPL in La Cañada Flintridge) artist’s new song titled “Reach for the Stars.” The first music to be broadcasted from another planet,’s song traveled 700 million miles to Earth. is an advocator of science and math education. NASA had broadcasted the Beatles’ song “Across the Universe” on the group’s 40th anniversary in 2008.

Mars Science Laboratory/ Curiosity sure is gaining ground in Mars research. What will it discover? What mysteries will Curiosity uncover? Was Mars once habitable for microorganisms? Perhaps only time will tell.


” Curiosity rover beams new song from Mars.” FOX News. Fox News, 28 Aug 2012. Web. 28 Aug 2012.

Khan, Amina. “Curiosity rover broadcasts message from Mars.” LA Times. LA Times, 27 Aug 2012. Web. 28 Aug 2012.


Meteroite Dating

How do scientists determine the age of meteorites, most of which are around 4.5 billion years old. –Amy


Meteorite Dating

Scientists measure the age of meteorites with the decay of radioactive isotopes. What is an isotope? Isotopes are elements with the same number of protons but a different number of neutrons. For instance, carbon-12 has 6 neutrons and carbon-14 has 8 neutrons. Some isotopes are very unstable and tend to decay into lighter elements by alpha or beta particle decay. Scientists use the half-life of certain elements to date objects. First, scientists must determine to isotope to use by examining the elemental composition of the object. For meteorites, scientists generally use Rubidium-87/ Strontium-87 decay, which has a half-life of 49 billion years. Rubidium-87 decays into Strontium-87. So if the object has 50% Rubidium-87 and 50% Strontium-87  (only formed by decay process), then the object is 49 million years old. Since some Strontium-87 may have been present originally, scientists use Strontium-86, whose content remains the same, as a reference. Determining the ratio between Rubidium-87/ Strontium-86 and Strontium-87/ Strontium-86 via mass spectrometer (vaporizes a tiny portion of the meteorite to form ions; the ions are then separated by mass in a magnetic field), scientists can then calculate the amount of each isotope present in the meteorite, and thus the age of meteorites. Although radioactive dating is the best method for scientists to date meteorites, many factors, such as the amount of sunshine or heavy rain, can affect measurements.

In Remembrance: Neil Armstrong (1930-2012)

Neil Armstrong, First Man to Walk the Moon

This year, we remember great contributors to the astronomy community. First Sally Ride, first woman in space. Now Neil Armstrong, first man to walk on the surface of the Moon. On August 25, 2012, astronaut Neil Armstrong suffered a coronary artery blockage and passed away at the age of 82. Armstrong shall forever be remembered by his spectacular Apollo 11 success and memorable quote: “That’s one small step for [a] man, one giant leap for mankind.” Indeed true, space exploration has blossomed in the past decades, with NASA’s space probes, rovers, ISS, and precision telescopes (Hubble telescope). Space innovations has translated into commercial improvement. Whatever scientists invent for space missions eventually finds itself modified for commercial use (e.g. laser, GPS, radar). Indeed, Armstrong was not only an astronaut but also a test pilot, aerospace engineer, university professor, and U.S. Naval Aviator. His first spaceflight was as a command pilot for NASA’s Gemini 8 mission in 1966. His second and last spaceflight, of course, was as the commander of the Apollo 11 mission in July of 1969. For this feat with Buzz Aldrin and Michael Collins, Armstrong received the Presidential Medal of Freedom, Congressional Space Medal of Honor, and Congressional Gold Medal. He may have left this Earth, but his legacy remains with us.

JPL/ NASA Chronicles of Discovery: Innovations IN SPACE, ON EARTH


From: JPL/ NASA Timeline: Chronicles of Discovery


  • Radar used for the first time to observe another planet when signals are bounced off Venus; a follow-up test reveals surface features as the planet rotates.
  • Digital image processing developed for the Mariner and ranger missions leads to many applications in medicine, law enforcement, and other fields.
  • Error-correcting codes designed to avoid dropouts in radio communication with Mariner spacecraft eventually find their way in to cell phones and compact discs.
  • Technology designed to purify “clean rooms” in which spacecraft are built are adapted for hospital operating rooms and other work environments.
  • JPL collaborates with the Department of Energy to develop low-cost solar panels for home energy and other applications.
  • 3-D computer animation techniques developed to model the flight of spacecraft lay the groundwork for computer-animated cartoon movies of the 1990s.
  • JPL debuts an experimental car powered by a hybrid mix of gasoline and electricity – a precursor of commercial models two decades.
  • Infrared technology from the Viking mission to Mars is adapted to create devices that are inserted into the ear to read body temperature.
  • A JPL team works with doctors from the Los Angeles Cedars-Sinai Medical Center to develop a tool for cleaning out clogged arteries without surgery, JPL excimer laser technology is evaluated as an alternative to balloon technology.
  • A JPL instrument called a spectrometer helps archeologist identify minerals on an ancient Guatemalan funeral mask.
  • An imaging system is created for the National Archives to monitor and preserve the original copies of the Constitution, the Declaration of Independence, and the Bill of Rights.
  • Explorers discover the lost city of Ubar, an outpost on the spice route of the Arabian Peninsula, thanks in part to images from radar imagers flown on the space shuttle.
  • Shuttle astronaut John Glenn helps test JPL’s Electronic Nose, a device that measures trace vapors in close environments. Applications include environmental monitoring, quality control, food processing, and medical diagnosis.
  • An ultrasonic drill is developed that adapts easily to extreme temperatures and can core the hardest rocks. The drill has application in space missions and in medicine.
  • JPL establishes a Global Positioning System ground network that provides highly precise location information for use in agriculture, earthquake monitoring, and aviation.
  • JPL’s rugged urban robot, known as “Urbie,” is developed as a prototype for military reconnaissance and police, emergency, and rescue personnel.
  • JPL scientists create a transparent welding curtain technology that maximizes protection from blue and ultra-violet radiation. They follow this with a superior technology for protective sunglasses for various light environments.
  • A tiny image sensor on a chip developed by JPL researchers originally for space imaging application has now become widely available for consumer use, cell phone cameras, digital still and video camera, and personal computer cameras use the image chip, which is easier to manufacture and consumes less power than other images sensors.
  • EPOXI is a multiple-use spacecraft. Originally Deep Impact, EPOXI was renavigated to a different comet, Hartley 2. EPOXI also observed extrasolar planets and tested the “Interplanetary Internet” from deep space.
  • JPL robot technology was used by a U.S. firm to create two mobile robots that investigated damage at Japan’s devastated Fukushima nuclear power station.

JPL/ NASA Chronicles of Discovery: Timeline (1990-2011)

Mars Rovers

From: JPL/ NASA Timeline: Chronicles of Discovery

August 10, 1990: Magellan enters orbit around Venus. Over the next four years, it maps 98 percent of the planet’s surface.

October 6, 1990: The U.S. – European Ulysses spacecraft launches a mission to study the Sun and its poles.

October 29, 1991: En route to Jupiter, Galileo makes the first flyby of an asteroid when it passes by Gaspra.

August 10, 1992: The U.S. – French ocean-monitoring satellite Topex/ Poseidon launches.

August 28, 1993: Galileo flies by a second asteroid, Ida, on its way to Jupiter.

December 2, 1993: Shuttle astronauts take a spacewalk to install JPL’s Wide-Field and Planetary Camera 2 in the Hubble Space telescope, compensating for a flaw in the telescope’s main mirror. The instrument allows Hubble to capture remarkable images of galaxies, nebula, planets, and many other celestial objects.

April 9, 1994: A decade after the first shuttle radar imaging mission, the third in the series launches. A JPL instrument is combined with a German-Italian radar system.

December 7, 1994: Galileo arrives at Jupiter, delivering a descent probe into the giant planet’s swirling atmosphere.

August 17, 1996: The NASA Scatterometer launches aboard Japan’s Advanced Earth Observing Satellite. The instrument studies near-surface ocean winds.

November 7, 1996: Mars Global Surveyor launches on a mission to orbit the red planet.

December 4, 1996: Mars Pathfinder launches, carrying a lander and instrumented rover.

February 12, 1997: JPL teams with a Japanese spacecraft launched under the Space Very Long Baseline Interferometry program to make radio observations of the distant Universe.

July 4, 1997: Mars Pathfinder lands, delivering the first mobile rover to another planet, By the final data transmission on September 27, the mission returns 2.3 billion bits of information, including more than 16,500 lander images and 550 rover images.

September 12, 1997: Mars Global Surveyor enters orbit.

October 15, 1997: Cassini launches to travel 6-1/2 years to Saturn, where the European-built Huygens probe will descend to the surface of the shrouded moon Titan.

February 17, 1998: Voyager 1 passes another spacecraft to become the most distant human-made object in space.

October 24, 1998: Deep Space 1 launches on a mission to flight-test advanced technologies, including an ion propulsion system.

February 7, 1999: Stardust launches on a mission to fly past a comet and return samples of comet and interstellar dust to Earth.

June 19, 1999: The Quick Scatterometer satellite launches into Earth orbit to study near-surface ocean winds around the globe.

December 18, 1999: Two JPL instruments, the Multi-angle Imaging SpectroRadiometer and the Advanced Spacebourne Thermal Emission and Reflection Radiometer, launch aboard NASA’s Terra satellite.

December 20, 1999: The Activity Cavity Irradiance Monitor Satellite launches to study the energy output of the Sun.

February 11, 2000: The Shuttle Radar Topography mission launches. The instrument uses a pair of large antennas to make a near-global map of Earth’s topography.

December 30, 2000: En route to Saturn, Cassini flies by Jupiter, making joint observations of the giant plant with the Galileo spacecraft.

April 7, 2001: Mars Odyssey launches; it enters orbit at the red planet on October 24.

August 8, 2001: Genesis launches on a mission to return samples of the solar wind to Earth.

December 7, 2001: The U.S. – French Jason 1 oceanography satellite launches.

March 17, 2002: Twin Earth-orbiting satellites are launched under the gravity Recovery and Climate Experiment mission.

May 4, 2002: JPL’s Atmospheric Infrared Sounder instrument launches aboard the Aqua satellite to study Earth’s climate and weather.

April 28, 2003: Galaxy Evolution Explorer launches to study the history of star formation.

June 10, 2003: Mars Exploration Rover “Spirit” launches to Mars.

August 25, 2003: Spitzer Space Telescope launches. It uses infrared technology to study asteroids, dust-shrouded stars, and distant galaxies.

January 3, 2004: Mars Exploration Rover “Spirit” lands at Gusev Crater on Mars.

January 24, 2004: Mars Exploration Rover “Opportunity” lands at Meridiani Planum on Mars.

March 2, 2004: JPL’s Microwave Instrument on the Rosetta Orbiter launches.

May, 2004: The Mars Exploration Rover begins the first of several extended missions.

June 30, 2004: Cassini-Huygens enters Saturn’s orbit.

July 15, 2004: JPL’s Microwave Limb Sounder and Tropospheric Emission Spectrometer launch aboard the Aura satellite to study ozone in Earth’s atmosphere.

January 12, 2005: Deep Impact launches to encounter comet Tempel 1.

January 14, 2005: The Huygens probe lands on Titan, Saturn’s mysterious smoggy moon.

July 3, 2005: Deep Impact’s impactor collides with comet Tempel 1.

August 12, 2005: Mars Reconnaissance Orbiter launches to seek out the history of water on the red planet.

July 3, 2007: Deep Impact becomes the EPOXI mission, retargeted to comet Hartley 2.

August 4, 2007: Phoenix, a Mars lander, launches to the red planet.

August 13, 2007: The Stardust spacecraft is reactivated to conduct a follow-up visit to comet Tempel 1.

September 13, 2007: Mars Exploration Rover “Opportunity” descends into Victoria Crater.

September 27, 2007: The Dawn mission to asteroid Vesta and the dwarf planet Ceres launches.

May 25, 2008: Phoenix lands near Mars’ North Pole to dig for water ice and analyze the soil.

June 20, 2008: The Ocean Surface Topography/ Jason 2 mission launches.

June 30, 2008: Cassini begins its first extended mission, called the Saturn Equinox mission.

October 22, 2008: The Moon Mineralogy Mapper launches aboard India’s Chandrayaan-1.

March 6, 2009: The Kepler mission launches on a search for Earth-like planets.

March 14, 2009: JPL technology launches on the European Space Agency’s Herschel/ Planck mission.

June 18, 2009: Diviner launches aboard Lunar Reconnaissance Orbiter to map temperatures at the lunar North Pole.

December 14, 2009: Wide-field Infrared Survey Explorer launches. It will scan the sky in infrared light, creating a vast catalog of celestial objects.

May 20, 2010: The Mars Exploration Rover project passes a historic longevity record: “Opportunity” rover surpasses the duration record set by the Viking 1 lander of 6 years and 116 days operating on the Martian surface.

September 27, 2010: Cassini begins its second extended mission, named the Cassini Solstice Mission.

November 1, 2010: The giant 70-meter (230-foot) antenna at the Goldstone Deep Space Communications goes back on line tracking deep space missions after a seven-month upgrade.

November 4, 2010: Deep Impact-EPOXI flies by comet Hartley 2.

December 25, 2010: Mars Odyssey becomes the longest-serving spacecraft at Mars – 3,340 days in orbit.

June 10, 2011: Aquarius launches to study Earth’s sea-surface salinity.

July 15, 2011: The Dawn Spacecraft enters orbit around asteroid Vesta.

August 5, 2011: Juno launches to Jupiter to explore the origin and evolution of the giant planet.

September 10, 2011: Gravity Recovery and Interior Laboratory twin spacecraft launch to explore the Moon’s gravity.

November 26, 2011: Mars Science Laboratory, “Curiosity” launches. The rover will investigate whether conditions on Mars have been favorable for life.

December 5, 2011: The Kepler Mission announces its first exoplanet in a Sin-like star’s habitable zone.

JPL/ NASA Chronicles of Discovery: Timeline (1950s-1989)

Voyager 1

From: JPL/ NASA Timeline: Chronicles of Discovery

January 31, 1958: Built in just three months, Explorer 1 is launched as the first U.S. satellite; it discovers the Van Allen radiation belts.

March 3, 1959: Pioneer 4 launches and escapes Earth’s gravity to orbit the Sun.

August 27, 1962: Mariner 2 launches and conducts the first flyby of another planet when it visits Venus on December 14.

July 28, 1964: Ranger 7 launches and executes an intentional crash-landing into the Moon on July 31. As it closes in, it sends back more than 4,000 pictures of the lunar surface.

November 28, 1964: Mariner 4 launches with a destination of Mars.

February 17, 1965: Ranger 8 launches and impacts the Moon in Mare Tranquillitatis three days later. This location will become the landing spot for the Apollo 11 astronauts 4-1/2 years later.

March 21, 1965: Ranger 9 launches and three days later impacts the Moon in the 108-kilometer-diameter (67-mile) crater Alphonsus, sending back more than 5,800 images.

July 14, 1965: After an eight-month voyage to Mars, Mariner 4 makes the first flyby of the red planet. The spacecraft radios back the first close-up photos of another planet.

May 30, 1966: Surveyor 1 launches. On June 2, it becomes the first U.S. spacecraft to make a soft landing on the moon.

April 17, 1967: Surveyor 3 launches, lading on the Moon on April 20. Two and a half years later, the Apollo 12 astronauts will land nearby and photograph the Surveyor 3 site.

June 14, 1967: Mariner 5 launches and flies by Venus on October 19.

September 8, 1967: Surveyor 5 launches and lands on the Moon September 11.

November 7, 1967: Surveyor 6 launches and soft-lands on November 10. The lunar mission runs until December 14.

January 7, 1968: Surveyor 7, the last of the Surveyor series, launches and soft-lands on the Moon on November 9. Overall, the Surveyors acquire 90,000 images from five sites on the Moon.

February 24, 1969: Mariner 6 launches. A month later, on March 27, Mariner 7 launches. They complete the first dual mission to Mars with flybys on July 3 and August 5.

May 30, 1971: Mariner 9 launches and reaches Mars on November 13, becoming the first spacecraft to orbit another planet. The craft operates for nearly a year around Mars.

November 3, 1973: Mariner 10 launches on a mission to Mercury and Venus, the first craft designed to visit two planets.

February 5, 1974: Using gravity-assist for the first time, Mariner 10 swings by Venus to borrow the planet’s gravity to propel it on to Mercury, which it passes on March 29. On September 21, it flies past Mercury again.

March 16, 1975: Mariner 19 flies by Mercury a third time.

August 20, 1975: Viking 1 launches an orbiter and lander toward Mars. On September 9, Viking 2 launches a similar orbiter- lander pair.

June 19, 1976: Viking 1 arrives in orbit at Mars. On July 20, its lander becomes the first craft to soft-land on another planet. On August 7, Viking 2 arrives in orbit, and its lander touches down on September 3.

August 20, 1977: Voyager 2 launches, followed by the launch of Voyager 1 on September 5.

June 26, 1978: The experimental Seasat satellite launches to test four instruments that use radar to study Earth and its seas. The satellite collected more ocean topography data than the previous 100 years of shipboard research.

March 5, 1979: Voyager 1 makes its closest approach to Jupiter. On July 9, Voyager 2 flies by the giant planet. Together, the Voyagers take more than 22,000 images of Jupiter and its moons.

November 12, 1980: Voyager 1 flies by Saturn.

August 25, 1981: Voyager 3 flies by Saturn.

October 6, 1981: The Solar Mesosphere Explorer launches to study processes that create and destroy ozone in Earth’s upper atmosphere.

November 12, 1981: The first in a series of radar imagers is launched on the space shuttle.

January 25, 1983: The Infrared Astronomical Satellite launches into Earth orbit. The telescope discovers solid material around distant stars, strongly suggesting the existence of planets.

October 5, 1984: The second in a series of imaging radar missions launches on the space shuttle.

January 24, 1986: Traveling to a planet more distant than any visited before, Voyager 2 makes the first ever flyby of Uranus, nearly 3 billion kilometers (1.8 billion miles) from Earth. Voyager images 15 of Uranus’ moons.

May 4, 1989: Magellan launches a mission to Venus.

August 25, 1989: Voyager 2 is the first spacecraft to fly by Neptune.

October 18, 1989: Galileo launches on a six-year journey to Jupiter.