Opportunity Finds Polished Spheres in its Trench
When NASA's Opportunity rover dug a trench into the Martian soil two days ago, it revealed a series of mysteries…
Hubble Helps Measure the Pace of Dark Energy
The Hubble Space Telescope has further confirmed the existence of "Dark Energy" - a mysterious force that seems to be…
Ulysses Finds Streams of Dust Coming from Io
Jupiter's moon Io is depositing a trail of dust particles as it makes its journey around the Sun, and the…
Look for Dust to Find New Earths
Instead of looking directly for Earth-sized planets, it might be easier to just try to find the ring of dust…
New Kuiper Object Rivals Pluto
Astronomers from Caltech and Yale University have discovered a distant object that could be nearly as large as Pluto. The…
Nasca Lines Imaged from Orbit
The European Space Agency's Proba spacecraft imaged the Nasca region of Peru; famous for its giant lines and animal figures.…
Hubble Sees a Ring of Pearls Around 1987 Supernova
Astronomers spotted the brightest supernova seen in modern times almost 17 years ago, and the Hubble Space Telescope has been…
Shuttle Launch Pushed Back to 2005
Space shuttle director Michael Kostelnik announced this week that work to return the shuttle fleet to flight was going slower…
Secret Russian Satellite Launched
A Russian Soyuz rocket with a classified government cargo lifted off from the Plesetsk Cosmodrome in far northern Russia. The…
What are the Risks of Radiation for Humans in Space?
Human travelers to Mars face many challenges. One of the biggest unknowns is exactly what effect radiation from the Sun…