A near-orbit rescue and the night sky share the same week
Software uploaded to LINK holds Swift at 347 kilometres, the Perseids peak under a new-moon sky, and Webb re-images NGC 2392 with two infrared cameras.
Science··Evening
Swift is still at 347 km; the software is up
According to NASA's 11 August update, Katalyst Space has uploaded a flight-software update to LINK, the vehicle planned to raise the Neil Gehrels Swift Observatory into a higher orbit. The new attitude-control algorithms are written to hold the craft steady with the actuators it still has. An actuator is the general name for thruster and wheel assemblies. NASA reports Swift at about 347 km altitude and states that an orbit-raising manoeuvre would become more difficult below an average of about 300 kilometres. The agency says the update has prepared LINK to continue its approach toward Swift, and that teams plan burns and manoeuvres in the coming days to align the two orbits. Before any capture and boost attempt, Katalyst will evaluate the vehicle's performance with NASA at each phase. Meanwhile the Swift team continues the operating approach it developed; NASA says that approach has reduced drag and slowed orbital decay. The public measurable quantity has therefore shifted from the craft's own spin toward the observatory's altitude and the 300-kilometre floor. The report does not yet say a capture or raise has finished; it places the work in software and alignment steps.[1]
The Perseid peak and Webb's Lion Nebula
On the sky side of the same week, Space.com reports that the Perseid meteor shower peaks tonight and can produce up to 100 meteors an hour under ideal conditions. The peak falls on the night of the new moon, leaving the sky free of moonlight. The shower forms as Earth passes through dust and rock left by comet 109P/Swift-Tuttle; many particles are no larger than a grain of sand and enter the atmosphere at about 214,000 km per hour. The meteors appear to radiate from Perseus, but the longest and brightest streaks show up about 45 degrees from the radiant. Space.com advises a dark site, about 30 minutes for the eyes to adjust, and no telescope or binoculars; the highest counts are expected before dawn. NASA, for its part, released images of NGC 2392 taken with the James Webb Space Telescope's NIRCam and MIRI instruments. A white dwarf sits at the centre of the planetary nebula; NASA likens the circular structure to a male lion's head and says the detail is visible thanks to high-resolution imaging. This is an image release; the page reports no new measurement. Credit goes to NASA, ESA, CSA and STScI, with processing by Alyssa Pagan.[2], [3]
Near work and a distant view share one calendar
Three sources place different distances of the same scientific desk side by side. LINK and Swift describe a rescue schedule tied to software, actuators and an altitude floor in low Earth orbit. The Perseids open a short peak window in which a dust trail becomes a shower visible from the ground the same night. The Webb image offers infrared detail of a planetary nebula without claiming a new quantitative result. What they share is calendar-bound observation and operations: for Swift the band between 347 kilometres and 300 km sets manoeuvre difficulty; for the Perseids a new-moon sky and predawn hours shape the count; for Webb the published frame shows instrument resolution more than a new measurement. The three reports do not prove one another. One is spacecraft preparation, one is a meteor-shower guide, and one is an image notice. Read together, the evening's science leaves near-orbit altitude figures and viewable sky events on the same week's table. Distinctions stay clear: the Swift update reports no completed raise, the Perseid text treats 100 meteors an hour as an ideal ceiling, and the Webb page carries no new physical measurement.[1], [2], [3]
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