A Cosmic Inkblot Test

Jika ini tes noda tinta, Anda mungkin akan melihat dasi kupu-kupu atau kupu-kuputergantung pada kepribadian Anda. Astronom mungkin akan melihat sisa-sisa sebuahbintang sekarat tersebar tentang ruang - tepatnya apa ini. NASA Spitzer Space Telescope menangkap pandangan inframerah dari apa yang disebut nebula planet, yang merupakan awan dari bahan diusir oleh sebuah bintang keluar terbakar, disebut kerdil putih. Objek ini disebut nebula halter setelah kemiripannya dengan peralatan latihan dalam cahaya tampak dilihat.

"Sangat menarik bagaimana pandangan Spitzer yang berbeda tentang halter terlihatdibandingkan dengan gambar optik," kata Dr Joseph Hora, penyidik ​​utama daripengamatan dari Harvard Smithsonian Center for Astrophysics, Cambridge, Mass

Dalam pandangan inframerah Spitzer, cahaya hijau menyebar, yang terang dekat pusat,mungkin dari atom gas panas yang dipanaskan oleh sinar ultraviolet dari kerdil putih pusat. Sebuah koleksi rumpun mengisi bagian tengah dari nebula, dan jari-jari berwarnamerah meluas melewati radial. Para astronom berpikir fitur ini mewakili molekul gas hidrogen, dicampur dengan jejak unsur yang lebih berat. Meskipun rusak terpisah oleh cahaya ultraviolet dari katai putih pusat, banyak molekul bahan ini dapat bertahan hiduputuh dan campuran kembali ke awan gas antar bintang, membantu untuk bahan bakar generasi berikutnya dari bintang.

Mohon Maaf Kalo Ada yang Salah,

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Earth and Super-Earth

This artists concept contrasts our familiar Earth with the exceptionally strange planet known as 55 Cancri e. While it is only about twice the size of the Earth, NASA's Spitzer Space Telescope has gathered surprising new details about this supersized and superheated world.
Astronomers first discovered 55 Cancri e in 2004, and continued investigation of the exoplanet has shown it to be a truly bizarre place. The world revolves around its sun-like star in the shortest time period of all known exoplanets just 17 hours and 40 minutes. (In other words, a year on 55 Cancri e lasts less than 18 hours.) The exoplanet orbits about 26 times closer to its star than Mercury, the most Sun-kissed planet in our solar system. Such proximity means that 55 Cancri e's surface roasts at a minimum of 3,200 degrees Fahrenheit (1,760 degrees Celsius).
The new observations with Spitzer reveal 55 Cancri e to have a mass 7.8 times and a radius just over twice that of Earth. Those properties place 55 Cancri e in the "super-Earth" class of exoplanets, a few dozen of which have been found. However, what makes this world so remarkable is the resulting low density derived from these measurements.
The Spitzer results suggest that about a fifth of the planet's mass must be made of light elements and compounds, including water. In the intense heat of 55 Cancri e's terribly close sun, those light materials would exist in a "supercritical" state, between that of a liquid and a gas, and might sizzle out of the planet's surface.
Only a handful of known super-Earths, however, cross the face of their stars as viewed from our vantage point in the cosmos. At just 40 light years away, 55 Cancri e stands as the smallest transiting super-Earth in our stellar neighborhood. In fact, 55 Cancri is so bright and close that it can be seen with the naked eye on a clear, dark night.

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Maffei 2: The Hidden Galaxy

Maffei 2 is the poster child for an infrared galaxy that is almost invisible to optical telescopes. Foreground dust clouds in the Milky Way block about 99.5% of its visible light, but this infrared image from NASAs Spitzer Space Telescope penetrates this dust to reveal the galaxy in all its glory. 
The astronomer Paolo Maffei first noted this as a mysterious smudge on a near infrared photographic plate in 1968. Four years later he identified the strange object to be a galaxy, now named after him. This discovery was made in the infancy of infrared astronomy and it would take many technological innovations in the following decades to allow astronomers to study obscured objects like this one in detail.
Most other galaxies the size of Maffei 2 had been cataloged for over a century. Had it not been hidden behind dust lanes in our own galaxy it may well have been one of the entries in the famous 18th century catalog of bright deep sky objects compiled by Charles Messier.
This Spitzer image clearly shows the unusual structure of Maffei 2. The strong central bar and asymmetric spiral arms help identify why the galaxy also harbors a starburst in its very core. Such dramatic bursts of star formation occur when massive amounts of dust and gas are driven into the center of a galaxy, often by gravitational interactions that create barred spiral structures in its disk.