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Quote terpaku 23-2-2017 08:27 AM

ummah tanah ait takkan berminat dgn topik ni..mereka lebih berminat dgn isu  fattah amin bercinta dgn nelopak

Quote airfilterkotor 23-2-2017 08:47 AM

Scientists discover seven Earth-sized planets orbiting nearby star

Rising hope of finding a "second Earth" out there in the cosmos, scientists announced Wednesday that they've found three planets circling a relatively nearby star that could be hospitable enough to support life.

They are among seven planets discovered orbiting the star known as TRAPPIST-1, about 39 light years from Earth in the Milky Way.

The scientists — some from the Space Telescope Science Institute in Baltimore — plan to probe the planets in coming years with advanced telescopes, including the Hubble Space Telescope and its planned successor, the James Webb Space Telescope.

The findings published Wednesday in the journal Nature increase scientific confidence that searching the heavens could turn up signs of life.

"We know there must be many more potential life-bearing planets out there just waiting to be found," said Sara Seager, a professor of planetary science and physics at Massachusetts Institute of Technology.



The TRAPPIST-1 system, which would take 44 million years to reach via jet plane, scientists said, was identified by a Chile-based observatory known as Transiting Planets and Planetesimals Small Telescope, or TRAPPIST.

The observatory announced last spring that there were three planets in the system and astronomers began probing it with NASA's Hubble and Spitzer Space Telescopes.

In research published last summer, Hubble showed two of the planets did not have inhospitable hydrogen- and helium-dominated atmospheres. Nikole Lewis, an astronomer at the Baltimore institute who was among the panelists at NASA's Wednesday press conference, said that raised hope that the planets could support life.

Nearly three weeks of observations from the Spitzer telescope showed TRAPPIST-1 to be different in many ways from Earth's solar system, but nonetheless capable of holding worlds teeming with water and life.

Scientists trained that observatory on the TRAPPIST-1 system using a technique in which they watch objects pass in front of the star, revealing the rest of the system. That showed the four additional planets and their Earth-like qualities.

The three planets that are considered the strongest candidates for habitation receive similar amounts of light from their star as Earth and Mars do, though they are significantly closer to it than any objects are to the sun. TRAPPIST-1 is a red dwarf that is 200 times dimmer than the sun and significantly smaller — if the sun were the size of a basketball, TRAPPIST-1 would be the size of a golf ball.

Two of the planets are about the same size as Earth, while the third is 13 percent larger. Their densities suggest they are rocky, and scientists suspect their surface temperatures could allow them to hold oceans of liquid water.

On all three of the planets, a solar year passes in less than 12 days. A neighboring planet that is closest to TRAPPIST-1 orbits the star once every day and a half.

All seven planets within the system are closer to their star than Mercury, our solar system's innermost planet, is to the sun. But, because TRAPPIST-1 is a weak red dwarf, the three planets likely have surface temperatures similar to Venus, Earth and Mars, the scientists said.

Scientists said they are so close together that a person standing on the surface of any one of them would be able to see the others big and bright in the sky, like the moon is seen from Earth, but with even more beauty.

"The TRAPPIST-1 system has really captured our imagination," Seager said.

Scientists had never before found so many Earth-like planets around a single star.

"The discovery gives us a hint that finding a second Earth is not just a matter of if, but when," said Thomas Zurbuchen, associate administrator of the science mission directorate at NASA.

Work to learn more about the planets and how to detect potential life on them will now ramp up.

Lewis said Hubble will continue to probe the planets to reveal whether they have substantial atmospheres and, if so, what elements they contain.

She also expects the James Webb Space Telescope, which was largely assembled at NASA's Goddard Space Flight Center in Greenbelt and is scheduled to launch next year, will look at the system early in its mission. Both telescopes have spectrographs — instruments that can reveal the composition of the atmospheres.

"It'll take a lot of observations with Hubble and Webb to detect water," Lewis said. "We are certainly looking."

The Spitzer telescope, which NASA launched in 2003, was better suited to detect the planets than TRAPPIST because it observes from space and Hubble because it observes in infrared light. Hubble, launched in 1990, observes in mostly visible light. The view from the TRAPPIST telescope and other ground-based infrared telescopes can be clouded by Earth's own radiation.

Observing in infrared allows scientists to see through dust and to detect relatively cool objects, such as the TRAPPIST-1 star.

"This is the most exciting discovery we've had yet with Spitzer in almost 14 years of observation," said Sean Carey, manager of NASA's Spitzer Science Center in California.

But once the Webb telescope gets up and running, scientists can use it and Hubble together to fine-tune observations and get a clearer picture of the planets, Lewis said.

The Space Telescope institute manages the Hubble's scientific mission from its offices on the Johns Hopkins University's Homewood campus. It will do the same for Webb, in addition to housing its operations center.

"The two have to work in tandem to holistically understand these planets," she said.

Quote airfilterkotor 23-2-2017 08:51 AM

Ker, nak bincang pasal Maharaja Lawak Megashit 2017...?

Quote airfilterkotor 23-2-2017 08:56 AM

[youtube]bnKFaAS30X8[/youtube]

Quote CiliPadiSedap 23-2-2017 09:21 AM

akak punya imagination tahun 2050, ada LRT daripada masjid jamek ke planet serupa bumi ini..

sebenarnya membazir kos minyak naik space x atau pun virgin space.. kita boleh bina rail LRT lagi jimat..dan guna elektrik.

Quote Simunggu 23-2-2017 09:24 AM

terpaku replied at 23-2-2017 08:27 AM
ummah tanah ait takkan berminat dgn topik ni..mereka lebih berminat dgn isu  fattah amin bercinta dg ...

tak ..kamu salah...mereka lagi berminat cerita petanah pak seman pasal 1emdb & gst di kedai mamak...

Quote terpaku 23-2-2017 09:27 AM

Simunggu replied at 23-2-2017 09:24 AM
tak ..kamu salah...mereka lagi berminat cerita petanah pak seman pasal 1emdb & gst di kedai mamak. ...

kamu pula masih tidur depan atm tunggu brim ya

Quote tripleid 23-2-2017 09:38 AM

kalu ikut teori lebai pondok,ummah kapiaq gigih kaji pasal planet lain sbb nak lari drpd kiamat kat bumi

Quote ninjago 23-2-2017 09:42 AM

CiliPadiSedap replied at 23-2-2017 08:21 AM
akak punya imagination tahun 2050, ada LRT daripada masjid jamek ke planet serupa bumi ini..
...

hmmmmmm tinggi naw imaginationmu itu kakak!!

Quote pakis_hutan 23-2-2017 09:43 AM

Ok aku super teruja..

Quote pakis_hutan 23-2-2017 09:43 AM

Ok aku super teruja..

Quote batmana 23-2-2017 09:43 AM

kat bumi pn dh byk kerosakan.
lagi nk buat kt planet lain.

cukup2la tu.

Quote puccafan 23-2-2017 09:55 AM

Pasni bole la guna dialog "tak suka dok sini, pegi dok planet lain"

Ada kemungkinan tak, yang dikatakan kiamat tu sebenarnya waktu kematian bumi. Bumi musnah dan waktu tu, manusia dah berevolusi, dah pindah planet lain yg tak tercemar lagi, so beautiful and wonderful like heaven

Mati la kena hencap dengan lobai dan lobainita

Quote mbhcsf 23-2-2017 10:09 AM

airfilterkotor replied at 23-2-2017 08:47 AM
Scientists discover seven Earth-sized planets orbiting nearby star

Rising hope of finding a "seco ...

interesting ye, analysis  yg menyeluruh setiap planet tu yg dua kecik tu belum ada lagi ye...curiosu jugak nak tahu komposisi udara , pepejal dan gas .....
depa dok cari kompisis planet yg boleh support life ni...

Quote airfilterkotor 23-2-2017 02:24 PM

mbhcsf replied at 23-2-2017 10:09 AM
interesting ye, analysis  yg menyeluruh setiap planet tu yg dua kecik tu belum ada lagi ye...curio ...

Kena tunggu teleskop James Webb siap tahun depan.

Quote spiderman80 23-2-2017 02:26 PM

Semoga planet2 baru dijumpai itu ada perkhidmatan Internet.

Quote xy_daen 23-2-2017 02:28 PM

Bila Annunaki nak balik ni..

Quote airfilterkotor 23-2-2017 04:07 PM

spiderman80 replied at 23-2-2017 02:26 PM
Semoga planet2 baru dijumpai itu ada perkhidmatan Internet.

Spidey... jarak dia 39 tahun cahaya dari bumi.
Nasa kata kalau naik jet makan 44 juta tahun baru sampai ke sana.

Maknanya kalau kita semua mati hidup balik mati hidup balik mati hidup balik 9 kali dalam katebang pun, masih tak sampai destinasi lagi.

Oleh yang demikian, pakai jer perkhidmatan internet kat bumi ni. Bersyukurlah dengan apa yang ada.

Quote azimodin 23-2-2017 05:05 PM

Ni kalau geng2 Flat Earth baca mesti hencap "ini semua tipu daya yahudi". Tapi kalau betul2 boleh menjadi habitat manusia tetaap x mampu nak gi. Bak kata tuan tanah, mati idup balik 9 kali pon belum tentu sampai. Kecuali la teknologi membolehkan kita hibernate dan x jadi tua sehingga sampai kat planet2 tu.

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