Astronomers at Australias national radio and optical observatories will watch as a probe released from a spacecraft slams into a comet about 133 million km away at a speed of nearly 37,000 km/h (10.2 km per second).
The cosmic demolition derby takes place about 4pm AEST on 4 July when the comet, Tempel 1, will be most easily seen from the mid-Pacific. The 370 kg probe, carried by NASAs Deep Impact spacecraft, has been travelling toward the comet for 173 days and has travelled over 431 million km. At the time of the collision the comet will be travelling at 108,000 km/h. The probe will be travelling in almost the same orbit at 80,000 km/h, and will hit the comet at an angle.
The impact may gouge out a crater up to 200 m across and 50 m deep, and could lead to a flow of gas and dust from the comets interior lasting for months. This outflow is what ground-based astronomers will be looking for. The comet will appear to be near the star Spica, the brightest star in the constellation Virgo, and also near the planet Jupiter. By the time the sun sets for eastern Australia it will be high in the sky, almost due north. Before the impact the comet will not be bright enough to see with the unaided eye. The impact may brighten it, but by how much is unknown.
Smallest transistor worldwide switches current with a single atom in solid electrolyte
17.08.2018 | Karlsruher Institut für Technologie (KIT)
Protecting the power grid: Advanced plasma switch for more efficient transmission
17.08.2018 | DOE/Princeton Plasma Physics Laboratory
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
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Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
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