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9 March 2004: 10,000 galaxies in a keyhole

The Space Telescope Science Institute publicly unveiled the Hubble Ultra Deep Field on 9 March 2004, and NASA issued its release the same day. The field showed an estimated 10,000 galaxies in a patch of the constellation Fornax only about one-tenth the apparent diameter of the full Moon.

The release combined an extremely deep visible-light image from Hubble's Advanced Camera for Surveys with a separate near-infrared view from NICMOS. Light from the faintest detected objects arrived at about one photon per minute.

800 exposures, 400 orbits

The ACS image was built from 800 exposures through four filters — F435W, F606W, F775W and F850LP — over 400 Hubble orbits of director's discretionary time. Total exposure came to 11.3 days, roughly one million seconds, gathered between 24 September 2003 and 16 January 2004 across about 11 square arcminutes.

STScI director Steven Beckwith was principal investigator and committed the orbits; Massimo Stiavelli led the project, and Anton Koekemoer assembled the final ACS image from the individual exposures.

Toothpicks and bracelet links

The image exposed a population of irregular early galaxies, described in the release as resembling toothpicks or links on a bracelet, very unlike familiar mature spirals and ellipticals.

The ACS view reached galaxies from about 800 million years after the Big Bang. NASA said NICMOS might have detected candidates from about 400 million years after the Big Bang, but Rodger Thompson, the NICMOS principal investigator, cautioned that those required follow-up confirmation.

11:38:11 UTC, 14 January 2005

Huygens entered Titan's atmosphere at 09:05:56 UTC on 14 January 2005 and descended by parachute for about 147 minutes, transmitting atmospheric measurements and images to the Cassini orbiter. It touched down at 11:38:11 UTC at 10.25° south, 192.32° west, moving at 4.54 metres per second.

This was humanity's first successful landing on a world in the outer Solar System, and it remains the most distant landing from Earth. The first relayed scientific data reached ESA's operations centre in Darmstadt at 17:19 CET that afternoon.

Loose damp sand, not an ocean

The probe carried instruments capable of determining whether it had settled on solid ground or splashed into liquid. It landed on solid terrain with the consistency of loose, damp sand.

Surface temperature measured 93.65 ± 0.25 K, about −179.5 °C, at a pressure of 1,467 ± 1 hPa. At that temperature the rounded "rocks" in Huygens's photographs were probably water ice, frozen hard enough to behave like stone.

Seventy-two minutes of relay

Cassini received Huygens data from the surface for 72 minutes, until the orbiter passed below the landing site's horizon. A communications configuration error had already cost nearly half the planned images — 376 returned instead of roughly 700.

Earth-based radio telescopes went on detecting the probe's carrier signal for more than three additional hours. But the orbiter's relay window had closed, so no further Huygens science data could be recovered.

28 June 2011, in Rome

At its 37th session in Rome on 28 June 2011, the FAO Conference adopted Resolution 4/2011, declaring that the world had achieved freedom from rinderpest in its natural setting. Rinderpest became the first animal disease eradicated and only the second infectious disease after human smallpox.

The declaration came ten years after the last identified case, in Kenya in 2001, because all 198 countries and territories with susceptible animals first had to demonstrate freedom through surveillance and testing.

What the committee reviewed

The Joint FAO/OIE Committee on Global Rinderpest Eradication, chaired by William Taylor, worked through country-status dossiers, surveillance and diagnostic evidence, and concluded that rinderpest had ceased to circulate outside laboratories.

The World Organisation for Animal Health had already adopted its own eradication resolution in May 2011. The two declarations were complementary rather than a single simultaneous announcement.

Eradicated in nature, not in freezers

The resolution urged member states to maintain surveillance and contingency plans, and to destroy rinderpest-virus material or secure it in approved high-containment storage. Eradication here means the virus no longer circulates in animals in nature, not that every laboratory sample was destroyed.

It also called on FAO to maintain worldwide freedom from rinderpest and to apply the lessons of the eradication to other diseases affecting food security and public health.

Out of the al-Omari Mosque

On 18 March 2011, several thousand people marched from Daraa's al-Omari Mosque after Friday prayers, demanding the release of the detained schoolchildren, greater political freedom and an end to official corruption. Political-security officers had detained and tortured 15 boys aged 10 to 15 accused of painting anti-government graffiti; their families had appealed unsuccessfully to the Daraa political-security chief, Atef Najeeb.

Security forces began with stones, batons, water cannon and tear gas, then political-security personnel opened fire with live ammunition. At least four protesters were killed and several dozen wounded. Some demonstrators had carried olive branches and unbuttoned their shirts to show they were unarmed.

Three days

Thousands joined funeral demonstrations on 19 March, where protesters said the deaths had broken the barrier of fear; security forces used tear gas and later bullets against the mourners. On 20 March government forces fired on another Daraa gathering, killing one more person and injuring dozens.

Authorities sealed the city and temporarily disrupted telephone service while announcing that the 15 children would be released and promising an investigation. The demonstrations continued and spread to nearby towns, then across Syria; by late April the government had occupied Daraa and imposed a siege restricting movement and basic services.

Which date counts as the beginning

There is no single uncontested start. 15 March is widely commemorated because of coordinated demonstrations in Damascus, 18 March was the first major Daraa protest and lethal crackdown, and smaller protests had already occurred in February.

Calling March 2011 the start of the civil war is retrospective. The violence began as civil unrest and organised armed conflict developed later; different legal and historical accounts date that transition differently.

Government forces killed protesters first, and some Daraa residents attacked government property and security personnel after the initial shootings.

Nine minutes from launch pad to landing pad

SpaceX launched a Falcon 9 from Cape Canaveral at 8:29 p.m. EST on 21 December 2015, carrying 11 ORBCOMM OG2 communications satellites. In UTC — the date usually listed for the flight — it was already 22 December.

At 8:38 p.m. EST, nine minutes after liftoff, the rocket's first stage landed vertically at Landing Zone 1 on Cape Canaveral Air Force Station, roughly six miles from the pad it had left. It was the first such recovery of an orbital-class first stage following an orbital launch.

The satellites were still the actual mission

The landing was a secondary test objective. The primary work belonged to the upper stage, which continued on and deployed all 11 ORBCOMM satellites into their intended insertion orbits.

Landing Zone 1 was the former Launch Complex 13. The stage that came down there had flown a suborbital trajectory: "orbital-class" describes the launch vehicle and the mission, not the path the booster itself took.

Recovered, but not yet reused

By the end of the mission all 11 satellites were in nominal orbits and an intact Falcon 9 first stage stood at Landing Zone 1. The stage had been recovered; it had not demonstrated reflight, and it would never fly again.

Blue Origin had landed its New Shepard the previous month, but New Shepard was a suborbital vehicle — the orbital-launch qualification is what this landing added. Falcon 9's first successful drone-ship landing came later, on 8 April 2016.

Operational reusability meant inspection, refurbishment and reflight, a cycle SpaceX first completed with booster B1021 in March 2017.

Polling day, 23 June 2016

Voters across the United Kingdom and Gibraltar answered the EU-membership question on 23 June 2016. Polling closed at 10 p.m. and counting ran through the night.

It took 107,100 polling-station staff across 41,050 stations to run the vote. 33,577,342 ballots were cast from a registered electorate of 46,500,001 — a turnout of 72.2% — and 25,359 of them were rejected.

Certified at 7:08 a.m., declared at 7:20

Leave received 17,410,742 votes to Remain's 16,141,241: 51.9% to 48.1% of valid votes.

Chief Counting Officer Jenny Watson certified the aggregate result at 7:08 a.m. and declared it at Manchester Town Hall at 7:20 a.m. on 24 June. The outcome turned on a single UK-wide majority; nothing required separate majorities in each constituent nation.

Nothing changed in law that morning

The referendum did not withdraw the UK from the EU or alter domestic law. Its force was political until Parliament acted.

David Cameron, who had called the referendum and campaigned for Remain, spoke outside Downing Street on the morning of 24 June. He accepted the result, said the country needed new leadership, and announced that he would stay on temporarily while a successor was chosen.

The map underneath the total was not uniform: Scotland, Northern Ireland, London and Gibraltar returned Remain majorities, while Wales and every English region except London returned Leave majorities.

10:26 Beijing time, Von Kármán crater

China's Chang'e 4 began powered descent on 3 January 2019 at 10:15 Beijing time, from about 15 kilometres above the lunar surface. CNSA described the sequence as about 12 minutes long.

The lander hovered at roughly 100 metres to identify hazards and selected a comparatively level spot on its own, touching down at 10:26 Beijing time (02:26 UTC) on the floor of Von Kármán crater. It was the first successful soft landing on the Moon's far side.

Talking to Earth through Magpie Bridge

The far side generally has no line of sight to Earth, so Chang'e 4 sent the first close-range image of that hemisphere home through Queqiao — "Magpie Bridge" — a relay satellite already operating in a halo orbit around the Earth–Moon L2 region.

"Far side" means the hemisphere that generally faces away from Earth, not a permanently dark one. Nor was this humanity's first look at it: Luna 3 photographed the far side in 1959.

Yutu-2 down the ramp before midnight

Controllers separated the rover Yutu-2 from the lander later the same day. At 22:22 Beijing time it drove down the ramp onto the surface.

By the end of 3 January, a functioning lander and rover were operating inside a crater in the South Pole–Aitken basin; the landing site was later reconstructed as 177.5991° E, 45.4446° S.

3:22 p.m. from Pad 39A

A SpaceX Falcon 9 lifted off from Launch Complex 39A at NASA's Kennedy Space Center at 3:22 p.m. EDT on 30 May 2020, carrying a Crew Dragon capsule with two NASA astronauts aboard.

The first attempt on 27 May had been scrubbed for unfavorable weather. Robert Behnken and Douglas Hurley were flying Demo-2, the first crewed test flight of Crew Dragon and Falcon 9.

First from American soil since the shuttle

The launch put Americans into orbit from American soil for the first time since the Space Shuttle program ended in 2011, and it was the first flight of NASA astronauts aboard a commercially built and operated American crew spacecraft.

Hurley was spacecraft commander, responsible for launch, landing and recovery; Behnken was joint operations commander, responsible for rendezvous, docking and undocking. In orbit they began system checks and manual-control demonstrations, one of them planned for a point about a kilometre below the space station.

Still a test flight

Crew Dragon docked with the International Space Station at 10:16 a.m. EDT on 31 May, about 19 hours after launch, and Behnken and Hurley joined the Expedition 63 crew.

Demo-2 was the final major flight test in NASA's Commercial Crew Program — an end-to-end run covering launch, orbit, docking, undocking, re-entry and recovery. NASA certified SpaceX's crew-transportation system only after reviewing the completed test, in November 2020.

27 May 2020, 6 p.m. Eastern

Johns Hopkins University's running tally of recorded US COVID-19 deaths passed 100,000 on 27 May 2020, standing at 100,047 at 6 p.m. Eastern Time.

The same cutoff showed nearly 1.7 million confirmed US cases. Daily cases and deaths had fallen from their April peaks, though the recent decline in new diagnoses appeared to be reversing.

A cumulative count, not a single day

The figure was an accumulated total, not deaths recorded that day. About 7,000 deaths were recorded in the week ending 26 May alone.

Which date you get depends on which system you read. The Johns Hopkins live tally crossed the line on 27 May; the CDC dated the federal milestone to 28 May, when it issued a formal statement urging continued distancing, hand hygiene, sanitation and face coverings where indicated.

The counts were provisional either way. Death certificates, reporting delays and differing definitions meant totals were revised afterwards.

Checking the war comparison

One comparison invoked American deaths in World War I, but the Department of Veterans Affairs figures require care: 53,402 were battle deaths and 63,114 were other deaths in service. "Combat deaths" and "deaths during service" are two different numbers.

Crossing the line changed no policy. President Trump, who had ordered federal flags lowered through 24 May to honor pandemic victims, publicly acknowledged the threshold on 28 May.

26 February 2022: a joint statement

The leaders of the European Commission, France, Germany, Italy, the United Kingdom, Canada and the United States issued a joint statement on 26 February 2022 in response to Russia's attack on Ukraine.

They committed to removing selected Russian banks — not every Russian bank — from the SWIFT financial-messaging system, and to measures preventing Russia's central bank from deploying its international reserves to undermine existing sanctions.

Golden passports and a transatlantic task force

The statement also promised restrictions on so-called golden passports, tying citizenship-for-investment programs to sanctions enforcement, and a transatlantic task force to identify and freeze assets belonging to sanctioned people and companies.

SWIFT itself transmits standardized financial messages; it is not a bank or a settlement system. Disconnecting a bank from it is not the same as freezing that bank's assets or technically blocking every possible transfer.

The measures landed on later dates

The statement said in its own words that the new measures would be implemented in the coming days.

On 28 February the United States prohibited transactions involving Russia's central bank, and the Bank of Russia raised its key rate from 9.5% to 20%. The EU's initial SWIFT prohibition, covering seven Russian banks, took effect on 2 March.

21 September 2022: a televised address

In a televised address on 21 September 2022, Vladimir Putin announced a "partial mobilization" beginning that day and said he had signed the implementing order. Presidential Decree No. 647 declared partial mobilization in the Russian Federation from that date.

Putin said reservists would be called up — particularly people with prior service, relevant specialties and experience. Defence Minister Sergei Shoigu separately announced a target of about 300,000 reservists.

What "partial" and "300,000" actually rested on

"Partial" was the Kremlin's label rather than a bounded category in the published decree, whose wording was broader than Putin's description of experienced reservists.

Paragraph 7 of the decree, widely understood to contain the quota, was classified. The 300,000 figure came from Shoigu's public statement; the visible legal text did not establish that ceiling.

"This is not a bluff"

In the same address Putin accused Western states of "nuclear blackmail" and said Russia would use all means at its disposal to defend its territorial integrity, adding that this was not a bluff. He invoked Russia's nuclear capabilities without explicitly promising nuclear retaliation against the Ukrainian counteroffensive.

The announcement followed Russia's abrupt battlefield reverses in Ukraine's September Kharkiv counteroffensive, including the loss of Izium.

Protests broke out across Russia that evening. OVD-Info recorded at least 1,332 detentions in 38 cities, and later reported that some of the detained men received military summonses inside police stations.

14 March 2023: text first

OpenAI announced GPT-4 on 14 March 2023 as a large multimodal model capable of accepting text and image inputs and producing text outputs.

What reached users that day was text. ChatGPT Plus subscribers received capped access, and developers could join an API waitlist, with invitations starting on launch day and scaling gradually. Image input remained a non-public research preview and limited alpha, initially prepared with Be My Eyes.

Context windows and the 25,000-word claim

The standard model carried an 8,192-token context. A 32,768-token version existed with limited access, and it was that longer variant — not the default every Plus subscriber used — behind OpenAI's "more than 25,000 words" description.

Launch API pricing for standard GPT-4 was $0.03 per 1,000 prompt tokens and $0.06 per 1,000 completion tokens.

What OpenAI published, and what it withheld

OpenAI reported six months of alignment work, adversarial testing and safety improvements before deployment, and released its Evals framework as open-source software so outside users could document failures and regressions.

It kept the model's size and architecture undisclosed while publishing a technical report, a system card and pages of benchmark results — including a simulated Uniform Bar Exam score around the top 10% of test takers, which were OpenAI's own controlled evaluations.

Microsoft confirmed the same day that its new Bing preview had already been running an early, search-customized version of GPT-4 for about five weeks.