2013

• 2/7/2013 STScI-2013-04 1. Strobe-like Flashes Discovered in a Suspected Binary Protostar A mysterious infant star, swaddled inside a dusty blanket, behaves like a police strobe light. The newly discovered object offers... (More)

2012

• 7/26/2012 STScI-2012-33 2. ESO Telescopes Find Most Stellar Heavyweights Don't Live Alone A new study using European Southern Observatory (ESO) telescopes, including the Very Large Telescope, has shown that most very bright high-mass... (More)

2009

• 1/5/2009 STScI-2009-01 3. Brown Dwarfs Don't Hang Out With Stars Brown dwarfs, objects that are less massive than stars but larger than planets, just got more elusive, based on studies of nearby multiple-star systems... (More)

2006

• 12/11/2006 STScI-2006-54 4. Heavyweight Stars Light Up Nebula NGC 6357 The small open star cluster Pismis 24 lies in the core of the large emission nebula NGC 6357 in Scorpius, about 8,000 light-years away from Earth. Some of the stars in this cluster... (More)
• 3/15/2006 STScI-2006-11 5. Astronomers Measure Precise Mass of a Binary Brown Dwarf This is an artist's concept of a pair of eclipsing brown dwarfs. Brown dwarfs are mysterious celestial objects that fall somewhere between the smallest... (More)
• 1/9/2006 STScI-2006-02 6. There's More to the North Star Than Meets the Eye By stretching the capabilities of NASA's Hubble Space Telescope to the limit, astronomers have photographed the close companion of Polaris... (More)

2005

• 12/13/2005 STScI-2005-36 7. Astronomers Use Hubble to 'Weigh' Dog Star's Companion For astronomers, it's always been a source of frustration that the nearest white-dwarf star is buried in the glow of the brightest star in the nighttime sky. (More)

2004

• 7/15/2004 STScI-2004-24 8. Astronomers Measure Mass of a Single Star — First Since the Sun Astronomers have directly measured the mass of a single star — the first time such a feat has been accomplished for any solitary... (More)
• 6/15/2004 STScI-2004-51 9. Ultra-cool Diminutive Star Weighs In The power of the some of the world's biggest telescopes has been brought to bear to directly measure the mass, for the first time, of one of the smallest stars ever seen in the universe. (More)

1998

• 5/28/1998 STScI-1998-19 10. Hubble Takes First Image of a Possible Planet around Another Star and Finds a Runaway World The Hubble telescope has given astronomers their first direct look at what is possibly a planet outside... (More)
• 1/9/1998 STScI-1998-07 11. A New Class of X-ray Star? Teaming up space telescopes to make simultaneous ultraviolet and X-ray observations, astronomers may have solved a 20-year-old mystery and possibly discovered... (More)

1997

• 12/4/1997 STScI-1997-39 12. One Star's Loss is Another's Gain: Hubble Captures Brief Moment in Life of Lively Duo Some stars in double-star systems have found a quick way to lose weight by dumping... (More)
• 8/6/1997 STScI-1997-26 13. Hubble Separates Stars in the Mira Binary System Although the giant star Mira has been known for about 400 years, astronomers have had to wait for the Hubble telescope to provide the first ultraviolet-light... (More)

1995

• 11/29/1995 STScI-1995-48 14. Astronomers Announce First Clear Evidence of a Brown Dwarf Astronomers have made the first unambiguous detection of an elusive type of object known as a brown dwarf. (More)
• 9/14/1995 STScI-1995-33 15. Hubble Spies a Really Cool Star This Hubble telescope picture reveals one of the least massive and coolest stars ever seen [upper right]. This star is a diminutive companion... (More)
• 5/22/1995 STScI-1995-23 16. Hubble Probes the Workings of a Stellar Hydrogen Bomb Peering into the heart of two recently exploded double-star systems, the Hubble telescope has surprised researchers by finding... (More)
• 1/10/1995 STScI-1995-03 17. Red Dwarf Dynamo Raises Puzzle over Interiors of Lowest Mass Stars The Hubble telescope has uncovered surprising evidence that powerful magnetic fields may exist around the lowest mass stars in the universe... (More)

1994

• 12/21/1994 STScI-1994-54 18. Hubble Finds One of the Smallest Stars in the Universe The Hubble telescope's crisp vision has captured a first-time view of one of the smallest stars in our Milky Way Galaxy. Called Gliese 623b or Gl623b... (More)

1993

• 8/27/1993 STScI-1993-20 19. Core of the Globular Cluster NGC 6624 This is a comparison of pictures of the core of the globular cluster NGC 6624, as imaged with the European Space Agency's Faint Object Camera aboard NASA's Hubble Space Telescope. (More)

1990

• 10/4/1990 STScI-1990-15 20. R Aquarii - A Nearby Exploding Star NASA's Hubble Space Telescope has peered into the inner core of the nearby so-called "symbiotic star", R Aquarii, to reveal dramatic new details of the exploding star. (More)
• 5/22/1990 STScI-1990-05 21. The Resolving Power of the Hubble Space Telescope The image on the right is a portion of the first image returned by the Wide Field/Planetary Camera on the Hubble Space Telescope (HST). (More)