Washing machine sized satellite to scan more than 200,000 stars for planets
TAMPA, UNITED STATES: NASA is poised to launch a $337 million washing machine-sized spacecraft that aims to vastly expand mankind's search for planets beyond our solar system, particularly closer, Earth-sized ones that might harbor life.
The Transiting Exoplanet Survey Satellite, or TESS, is scheduled to launch Monday at 6:32 pm (2232 GMT) atop a SpaceX Falcon 9 rocket from Cape Canaveral, Florida.
Its main goal over the next two years is to scan more than 200,000 of the brightest stars for signs of planets circling them and causing a dip in brightness known as a transit.
NASA predicts that TESS will discover 20,000 exoplanets -- or planets outside the solar system -- including more than 50 Earth-sized planets and up to 500 planets less than twice the size of Earth.
"They are going to be orbiting the nearest, brightest stars," Elisa Quintana, TESS scientist at NASA's Goddard Space Flight Center, told reporters on Sunday.
"We might even find planets that orbit stars that we can even see with the naked eye," she added.
"So in the next few years we might even be able to walk outside and point at a star and know that it has a planet. This is the future."
TESS is designed as a follow-on to the US space agency's Kepler spacecraft, which was the first of its kind and launched in 2009. Now, the aging spacecraft is low on fuel and near the end of its life.
Kepler found a massive trove of exoplanets by focusing on one patch of sky, which contained about 150,000 stars like the Sun.
The Kepler mission found 2,300 confirmed exoplanets and nearly 4,500 candidates. But many were too distant and dim to study further.
TESS, with its four advanced cameras, will scan an area that is 350 times larger, comprising 85 percent of the sky in the first two years alone.
"By looking at such a large section of the sky -- this kind of stellar real estate -- we open up the ability to cherry-pick the best stars to do follow up science," said Jenn Burt, a postdoctoral fellow at the Massachusetts Institute of Technology (MIT).
"On average the stars that TESS finds observes be 30-100 times brighter and 10 times closer than the stars that Kepler focused on."
Since TESS uses the same method as Kepler for finding potential planets, by tracking the dimming of light when a celestial body passes in front of a star, the next step is for ground-based and space telescopes to peer closer.
The Hubble Space Telescope and the James Webb Space telescope, scheduled to launch in 2020, should be able to reveal more about planets' mass, density and the makeup of their atmosphere.
"TESS forms a bridge from what we have learned about exoplanets to date and where we are headed in the future," said Jeff Volosin, TESS project manager at NASA's Goddard Space Flight Center.
By focusing on planets dozens to hundreds of light-years way, TESS should be a stepping stone to future breakthroughs, he said.
"With the hope that someday, in the next decades, we will be able to identify the potential for life to exist outside the solar system."
Weather was expected to be 80 percent favorable for launch.
Let the Truth be known. If you read VB and like VB, please be a VB Supporter and Help us deliver the Truth to one and all.
Bhandara ordnance factory blast: 4 officials booked; FIR says negligence in repairing machines
_vb_05.jpeg)
Bhandara (PTI): The blast in the ordnance factory in Maharashtra’s Bhandara district on January 24, which claimed nine lives, was the result of alleged negligence in repairing machines and instruments, an official has said.
Four officials from the defence production unit, where trainees were allegedly made to work in highly sensitive areas, have been named in the FIR (first information report) registered on March 8 by the Jawahar Nagar police.
The police action is based on the findings of a probe committee formed after the accident that also left four injured, the official said on Thursday.
The FIR has named Devendra Meena, divisional officer of the safety section, Aadil Farooqui, junior works manager of the maintenance department, section administration officer Anandrao Faye, and Sanjay Dhapade from the general administration department. A few other unnamed officials have also been booked.
According to the police, an inquiry found that the “Extrumix machine and other instruments in the LTPE (Low Temperature Plastic Explosives) section of the RX department in building number 23” had deteriorated, but repairs were neglected, ultimately leading to the blast.
Also, trainees were assigned to work in highly sensitive sections of the unit.
The case has been registered under Bharatiya Nyaya Sanhita sections 106(1) concerning causing death by negligence and 125 (b) which pertains to “act endangering life or personal safety of others”.
Eight workers were killed on the spot and five others injured after a massive blast tore through the LTPE building number 23 in the HEX (High Energy Explosives) sub-division at the Ordnance Factory Bhandara located in Jawahar Nagar area of the district on the morning of January 24.
Another person succumbed to his injuries later, bringing the death toll to nine.
