Planetary gap fillers?

Article Abstract:

Determination of gaps in the infrared spectrum of stellar accretion discs provides a viable method in identifying planetary bodies orbiting young stars. The technique has enabled astronomers to identify planet-like objects orbiting eight T-Tauri stars in the Taurus-Ariga region.

author: David, Leonard
Methods, Observations, Infrared astronomy, T Tauri stars

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Hubble Vision Test

Article Abstract:

US space program officials have announced plans for repairing the Hubble Space Telescope (HST). The said plan would involve the launch of the space shuttle Endeavor whose crew would then be tasked with repairing the defective primary telescope mirror of the HST.

author: David, Leonard
Column, Maintenance and repair, Hubble Space Telescope (Artificial satellite)

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Exhaustive report?

Article Abstract:

Research has shown that the environmental impact of rocket exhaust is minimal in relation to other atmospheric pollutants. Environmental concerns should be addressed when designing future launch systems.

author: David, Leonard
Environmental aspects, Launch vehicles (Astronautics), Rocket engines

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