24th

  • Hubble’s Silver Anniversary 

For 25 years now, the Hubble Space Telescope has been changing the way we view the universe. Hubble data has yielded tens of thousands of scientific papers, and its powerful camera continues to beam back breathtaking images of the universe. Here, a look back at its history.

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Further information : http://www.astronomy.com/news/2015/04/looking-back-hubble-at

27th

  • A sharp view into black holes      

The Event Horizon Telescope has made a step toward taking the first detailed pictures of black holes by adding the South Pole Telescope to its instrumentation lineup.

The South Pole Telescope (SPT) and the Atacama Pathfinder Experiment (APEX) joined together in a “Very Long Baseline Interferometry” experiment for the first time in January 2015. The two telescopes together observed two sources — the black hole at the center of the Milky Way Galaxy, Sagittarius A*, and the black hole at the center of the nearby galaxy Centaurus A — and combined their signals to synthesize a telescope 4,300 miles (7,000 kilometers) across (yellow line). With this success, the SPT joins the Event Horizon Telescope array, which connects APEX, the Large Millimeter Telescope in Mexico, the Submillimeter Telescope in Arizona, the Combined Array for Research in Millimeter-wave Astronomy in California, the Submillimeter Array and James Clerk Maxwell Telescope in Hawaii, and the Institute for Radio Astronomy Millimetrique (IRAM) telescopes in Spain and France (not visible).

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Further information :http://www.astronomy.com/news/2015/04/a-sharp-view-into-black-holes

  • WATCH LIVE TODAY: SpaceX Launching Satellite for Turkmenistan @ 6:14 pm ET

The private spaceflight company SpaceX will launch a Falcon 9 rocket carrying the first satellite for Turkmenistan on Monday, April 27, at 6:14 pm ET (2214 GMT). SpaceX’s webcast will begin at 5:55 p.m. EDT (2155 GMT)and run through 8 p.m. EDT (0000 GMT). Watch live below. Mission Photos: SpaceX Rocket to Launch 1st Satellite for Turkmenistan

For this launch, SpaceX’s second mission in three weeks, a Falcon 9 rocket will launch the TurkmenÄlem52E/MonacoSat satellite into orbit for the European satellite provider Thales Alenia Space. Liftoff is set for 6:14 p.m. EDT, with the launch window extending through 7:44 p.m. EDT (2344 GMT).

From SpaceX: “This mission will launch TurkmenÄlem52E/MonacoSat, a communications satellite built on a Thales Alenia Space Spacebus 4000 C2 platform and weighing 4,500 kg at launch. The satellite’s design life exceeds 15 years, and its coverage zone encompasses Europe, Central Asia (up to the Chinese border), and virtually all of Africa. Once operational in orbit, TurkmenÄlem52E/MonacoSat will allow Turkmenistan to operate its first national satellite telecommunications system, ensuring enhanced, secure telecommunications for the country. The Turkmenistan Ministry of Communications will use Monaco’s 52 degrees East orbital position, via the Monaco-based satellite operator, Space Systems International – Monaco (SSI-Monaco).”

Further information: http://http://www.space.com/17933-nasa-television-webcasts-live-space-tv.html

  • Astronauts on Space Station Get First Zero-Gravity Viewscreen

Movie nights on board the International Space Station have just received a major upgrade with the launch of the first-ever projection screen designed for use in microgravity.

Previously limited to watching movies on laptop computer screens, or more recently, on iPads, the astronauts and cosmonauts spending six months to a year on the space station can now float back and relax as movies (and other types of media) play on a unique, ambient-light-rejecting, zero-gravity screen.

“Movie night in micro #Gravity aboard ISS on our new HD projector, which we use for conferences, tech software, etc.,” yearlong space station resident Scott Kelly wrote on Twitter, sharing a photo of the screen as he and his crew mates watched the movie “Gravity” on Saturday (April 25).

The new 65-inch (165-cm) ISS Viewscreen was developed by Austin-based Screen Innovations (SI) at the request of NASA. The screen was shipped to the station aboard the SpaceX Dragon cargo freighter that arrived at the orbiting laboratory on April 17.

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Further İnformation: http://www.space.com/29233-space-station-viewscreen-astronaut-tech.html

28th

  • First exoplanet visible light spectrum
    Observations revealed new properties of the first exoplant ever discovered around a normal star — 51 Pegasi b.

Astronomers using the HARPS planet-hunting machine at the European Southern Observatory’s (ESO) La Silla Observatory in Chile have made the first-ever direct detection of the spectrum of visible light reflected off an exoplanet. These observations also revealed new properties of this famous object, the first exoplanet ever discovered around a normal star — 51 Pegasi b. The result promises an exciting future for this technique, particularly with the advent of next-generation instruments such as ESPRESSO on the VLT and future telescopes such as the E-ELT.

The exoplanet 51 Pegasi b lies some 50 light-years from Earth in the constellation Pegasus. It was discovered in 1995 and will forever be remembered as the first confirmed exoplanet to be found orbiting an ordinary star like the Sun. It is also regarded as the archetypal hot Jupiter — a class of planets now known to be relatively commonplace, which is similar in size and mass to Jupiter but orbit much closer to their parent stars.

Since that landmark discovery, more than 1,900 exoplanets in 1,200 planetary systems have been confirmed, but in the year of the 20th anniversary of its discovery, 51 Pegasi b returns to the ring once more to provide another advance in exoplanet studies.

The team that made this new detection was led by Jorge Martins from the Instituto de Astrofísica e Ciências do Espaço (IA) and the Universidade do Porto, Portugal. They used the HARPS instrument on the ESO 3.6-meter telescope at the La Silla Observatory in Chile.

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This artist’s view shows the hot Jupiter exoplanet 51 Pegasi b, sometimes referred to as Bellerophon, which orbits a star about 50 light-years from Earth in the northern constellation Pegasus the Winged Horse. This was the first exoplanet around a normal star to be found in 1995. Twenty years later, this object was also the first exoplanet to be be directly detected spectroscopically in visible light.

Further information: http://www.astronomy.com/news/2015/04/first-exoplanet-visible-light-spectrum

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